Numbers of Transportation and Material Moving Occupations in National
    Occupation group
    
        
        
        
        
            Transportation and Material Moving Occupations
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 11,266,270 | 
        
            
                | 2005 | 11,339,260 | 
        
            
                | 2006 | 11,465,420 | 
        
            
                | 2007 | 11,558,960 | 
        
            
                | 2008 | 11,496,790 | 
        
            
                | 2009 | 10,820,300 | 
        
            
                | 2010 | 10,337,850 | 
        
            
                | 2011 | 10,413,370 | 
        
            
                | 2012 | 10,572,090 | 
        
            
                | 2013 | 10,799,650 | 
        
            
                | 2014 | 11,121,330 | 
        
            
                | 2015 | 11,465,130 | 
        
            
                | 2016 | 11,744,010 | 
        
            
                | 2017 | 12,020,530 | 
        
            
                | 2018 | 12,296,080 | 
        
            
                | 2019 | 12,532,040 | 
        
    
     
    
        Individual occupations
        
        
        
        
        
        
            
        
        
        
            Aircraft Cargo Handling Supervisors
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 7,460 | 
        
            
                | 2005 | 6,210 | 
        
            
                | 2006 | 5,620 | 
        
            
                | 2007 | 4,690 | 
        
            
                | 2008 | 4,950 | 
        
            
                | 2009 | 5,370 | 
        
            
                | 2010 | 6,160 | 
        
            
                | 2011 | 6,710 | 
        
            
                | 2012 | 6,720 | 
        
            
                | 2013 | 6,270 | 
        
            
                | 2014 | 5,750 | 
        
            
                | 2015 | 6,760 | 
        
            
                | 2016 | 7,460 | 
        
            
                | 2017 | 8,270 | 
        
            
                | 2018 | 8,920 | 
        
            
                | 2019 | 9,500 | 
        
    
         
        
        
            
        
        
        
            First-Line Supervisors of Helpers, Laborers, and Material Movers, Hand
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 169,860 | 
        
            
                | 2005 | 176,030 | 
        
            
                | 2006 | 178,820 | 
        
            
                | 2007 | 184,400 | 
        
            
                | 2008 | 186,230 | 
        
            
                | 2009 | 174,540 | 
        
            
                | 2010 | 166,360 | 
        
            
                | 2011 | 166,560 | 
        
            
                | 2012 | 168,910 | 
        
            
                | 2013 | 167,190 | 
        
            
                | 2014 | 171,720 | 
        
            
                | 2015 | 176,030 | 
        
            
                | 2016 | 183,620 | 
        
    
         
        
        
            
        
        
        
            First-Line Supervisors of Material-Moving Machine and Vehicle Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 222,590 | 
        
            
                | 2005 | 221,520 | 
        
            
                | 2006 | 220,570 | 
        
            
                | 2007 | 223,710 | 
        
            
                | 2008 | 218,480 | 
        
            
                | 2009 | 205,780 | 
        
            
                | 2010 | 196,420 | 
        
            
                | 2011 | 198,690 | 
        
            
                | 2012 | 197,300 | 
        
            
                | 2013 | 197,800 | 
        
            
                | 2014 | 197,000 | 
        
            
                | 2015 | 203,550 | 
        
            
                | 2016 | 202,760 | 
        
    
         
        
        
            
        
        
        
            Air Transportation Workers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 216,470 | 
        
            
                | 2013 | 234,230 | 
        
            
                | 2014 | 242,350 | 
        
            
                | 2015 | 260,670 | 
        
            
                | 2016 | 265,890 | 
        
            
                | 2017 | 273,940 | 
        
            
                | 2018 | 271,880 | 
        
            
                | 2019 | 275,960 | 
        
    
         
        
        
        
        
            
        
        
        
            Airline Pilots, Copilots, and Flight Engineers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 78,490 | 
        
            
                | 2005 | 76,240 | 
        
            
                | 2006 | 75,810 | 
        
            
                | 2007 | 78,250 | 
        
            
                | 2008 | 77,090 | 
        
            
                | 2009 | 74,420 | 
        
            
                | 2010 | 68,580 | 
        
            
                | 2011 | 68,350 | 
        
            
                | 2012 | 66,270 | 
        
            
                | 2013 | 73,030 | 
        
            
                | 2014 | 75,760 | 
        
            
                | 2015 | 81,350 | 
        
            
                | 2016 | 81,520 | 
        
            
                | 2017 | 84,070 | 
        
            
                | 2018 | 82,890 | 
        
            
                | 2019 | 84,520 | 
        
    
         
        
        
            
        
        
        
            Commercial Pilots
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 21,370 | 
        
            
                | 2005 | 24,860 | 
        
            
                | 2006 | 27,120 | 
        
            
                | 2007 | 29,180 | 
        
            
                | 2008 | 31,250 | 
        
            
                | 2009 | 29,180 | 
        
            
                | 2010 | 29,900 | 
        
            
                | 2011 | 31,630 | 
        
            
                | 2012 | 34,990 | 
        
            
                | 2013 | 37,340 | 
        
            
                | 2014 | 38,170 | 
        
            
                | 2015 | 39,760 | 
        
            
                | 2016 | 38,980 | 
        
            
                | 2017 | 38,490 | 
        
            
                | 2018 | 37,870 | 
        
            
                | 2019 | 37,830 | 
        
    
         
        
        
        
        
            
        
        
        
            Air Traffic Controllers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 22,260 | 
        
            
                | 2005 | 21,590 | 
        
            
                | 2006 | 23,240 | 
        
            
                | 2007 | 24,180 | 
        
            
                | 2008 | 24,260 | 
        
            
                | 2009 | 24,420 | 
        
            
                | 2010 | 23,970 | 
        
            
                | 2011 | 23,580 | 
        
            
                | 2012 | 23,260 | 
        
            
                | 2013 | 23,060 | 
        
            
                | 2014 | 22,860 | 
        
            
                | 2015 | 23,130 | 
        
            
                | 2016 | 23,240 | 
        
            
                | 2017 | 22,790 | 
        
            
                | 2018 | 22,390 | 
        
            
                | 2019 | 22,090 | 
        
    
         
        
        
            
        
        
        
            Airfield Operations Specialists
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 4,810 | 
        
            
                | 2005 | 4,510 | 
        
            
                | 2006 | 4,760 | 
        
            
                | 2007 | 6,210 | 
        
            
                | 2008 | 8,050 | 
        
            
                | 2009 | 7,670 | 
        
            
                | 2010 | 6,790 | 
        
            
                | 2011 | 6,060 | 
        
            
                | 2012 | 6,990 | 
        
            
                | 2013 | 7,250 | 
        
            
                | 2014 | 7,050 | 
        
            
                | 2015 | 7,920 | 
        
            
                | 2016 | 8,760 | 
        
            
                | 2017 | 9,590 | 
        
            
                | 2018 | 9,960 | 
        
            
                | 2019 | 10,680 | 
        
    
         
        
        
            
        
        
        
            Flight Attendants
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 84,960 | 
        
            
                | 2013 | 93,550 | 
        
            
                | 2014 | 98,510 | 
        
            
                | 2015 | 108,510 | 
        
            
                | 2016 | 113,390 | 
        
            
                | 2017 | 119,000 | 
        
            
                | 2018 | 118,770 | 
        
            
                | 2019 | 120,840 | 
        
    
         
        
        
            
        
        
        
            Flight Attendants
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 101,980 | 
        
            
                | 2005 | 99,590 | 
        
            
                | 2006 | 96,760 | 
        
            
                | 2007 | 97,010 | 
        
            
                | 2008 | 99,480 | 
        
            
                | 2009 | 95,810 | 
        
            
                | 2010 | 88,020 | 
        
            
                | 2011 | 87,190 | 
        
            
                | 2012 | 84,960 | 
        
            
                | 2013 | 93,550 | 
        
            
                | 2014 | 98,510 | 
        
            
                | 2015 | 108,510 | 
        
            
                | 2016 | 113,390 | 
        
            
                | 2017 | 119,000 | 
        
            
                | 2018 | 118,770 | 
        
            
                | 2019 | 120,840 | 
        
    
         
        
        
            
        
        
        
            Motor Vehicle Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 3,618,170 | 
        
            
                | 2013 | 3,664,250 | 
        
            
                | 2014 | 3,741,420 | 
        
            
                | 2015 | 3,851,700 | 
        
            
                | 2016 | 3,934,080 | 
        
            
                | 2017 | 4,006,890 | 
        
            
                | 2018 | 4,088,870 | 
        
            
                | 2019 | 4,174,710 | 
        
    
         
        
        
        
        
            
        
        
        
            Ambulance Drivers and Attendants, Except Emergency Medical Technicians
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 17,410 | 
        
            
                | 2005 | 18,320 | 
        
            
                | 2006 | 21,100 | 
        
            
                | 2007 | 21,520 | 
        
            
                | 2008 | 21,790 | 
        
            
                | 2009 | 19,570 | 
        
            
                | 2010 | 19,440 | 
        
            
                | 2011 | 18,080 | 
        
            
                | 2012 | 18,540 | 
        
            
                | 2013 | 18,380 | 
        
            
                | 2014 | 19,350 | 
        
            
                | 2015 | 19,950 | 
        
            
                | 2016 | 17,300 | 
        
            
                | 2017 | 15,310 | 
        
            
                | 2018 | 15,380 | 
        
            
                | 2019 | 14,740 | 
        
    
         
        
        
            
        
        
        
            Driver/Sales Workers and Truck Drivers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 2,719,630 | 
        
            
                | 2013 | 2,758,700 | 
        
            
                | 2014 | 2,828,110 | 
        
            
                | 2015 | 2,922,450 | 
        
            
                | 2016 | 2,989,540 | 
        
            
                | 2017 | 3,052,680 | 
        
            
                | 2018 | 3,130,500 | 
        
            
                | 2019 | 3,223,840 | 
        
    
         
        
        
            
        
        
        
            Driver/Sales Workers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 406,910 | 
        
            
                | 2005 | 400,530 | 
        
            
                | 2006 | 396,680 | 
        
            
                | 2007 | 382,360 | 
        
            
                | 2008 | 372,720 | 
        
            
                | 2009 | 363,050 | 
        
            
                | 2010 | 371,670 | 
        
            
                | 2011 | 387,950 | 
        
            
                | 2012 | 394,110 | 
        
            
                | 2013 | 396,470 | 
        
            
                | 2014 | 405,810 | 
        
            
                | 2015 | 417,660 | 
        
            
                | 2016 | 426,310 | 
        
            
                | 2017 | 426,870 | 
        
            
                | 2018 | 414,860 | 
        
            
                | 2019 | 444,660 | 
        
    
         
        
        
            
        
        
        
            Heavy and Tractor-Trailer Truck Drivers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 1,553,370 | 
        
            
                | 2005 | 1,624,740 | 
        
            
                | 2006 | 1,673,950 | 
        
            
                | 2007 | 1,693,590 | 
        
            
                | 2008 | 1,672,580 | 
        
            
                | 2009 | 1,550,930 | 
        
            
                | 2010 | 1,466,740 | 
        
            
                | 2011 | 1,508,620 | 
        
            
                | 2012 | 1,556,510 | 
        
            
                | 2013 | 1,585,300 | 
        
            
                | 2014 | 1,625,290 | 
        
            
                | 2015 | 1,678,280 | 
        
            
                | 2016 | 1,704,520 | 
        
            
                | 2017 | 1,748,140 | 
        
            
                | 2018 | 1,800,330 | 
        
            
                | 2019 | 1,856,130 | 
        
    
         
        
        
            
        
        
        
            Light Truck Drivers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 938,730 | 
        
            
                | 2005 | 938,280 | 
        
            
                | 2006 | 941,590 | 
        
            
                | 2007 | 922,900 | 
        
            
                | 2008 | 908,960 | 
        
            
                | 2009 | 834,780 | 
        
            
                | 2010 | 780,260 | 
        
            
                | 2011 | 771,210 | 
        
            
                | 2012 | 769,010 | 
        
            
                | 2013 | 776,930 | 
        
            
                | 2014 | 797,010 | 
        
            
                | 2015 | 826,510 | 
        
            
                | 2016 | 858,710 | 
        
            
                | 2017 | 877,670 | 
        
            
                | 2018 | 915,310 | 
        
            
                | 2019 | 923,050 | 
        
    
         
        
        
        
        
            
        
        
        
            Bus Drivers, Transit and Intercity
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 183,710 | 
        
            
                | 2005 | 183,450 | 
        
            
                | 2006 | 191,120 | 
        
            
                | 2007 | 189,050 | 
        
            
                | 2008 | 184,160 | 
        
            
                | 2009 | 177,510 | 
        
            
                | 2010 | 179,700 | 
        
            
                | 2011 | 176,190 | 
        
            
                | 2012 | 162,840 | 
        
            
                | 2013 | 157,830 | 
        
            
                | 2014 | 158,050 | 
        
            
                | 2015 | 168,620 | 
        
            
                | 2016 | 169,680 | 
        
            
                | 2017 | 176,140 | 
        
            
                | 2018 | 174,110 | 
        
            
                | 2019 | 179,510 | 
        
    
         
        
        
            
        
        
        
            Shuttle Drivers and Chauffeurs
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 475,430 | 
        
            
                | 2005 | 465,880 | 
        
            
                | 2006 | 456,570 | 
        
            
                | 2007 | 461,590 | 
        
            
                | 2008 | 460,100 | 
        
            
                | 2009 | 459,480 | 
        
            
                | 2010 | 467,610 | 
        
            
                | 2011 | 477,400 | 
        
            
                | 2012 | 489,750 | 
        
            
                | 2013 | 496,110 | 
        
            
                | 2014 | 499,440 | 
        
            
                | 2015 | 505,560 | 
        
            
                | 2016 | 515,020 | 
        
            
                | 2017 | 507,340 | 
        
            
                | 2018 | 504,150 | 
        
    
         
        
        
            
        
        
        
            Taxi Drivers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 132,650 | 
        
            
                | 2005 | 144,280 | 
        
            
                | 2006 | 154,490 | 
        
            
                | 2007 | 165,590 | 
        
            
                | 2008 | 170,520 | 
        
            
                | 2009 | 167,740 | 
        
            
                | 2010 | 161,940 | 
        
            
                | 2011 | 166,890 | 
        
            
                | 2012 | 167,360 | 
        
            
                | 2013 | 170,030 | 
        
            
                | 2014 | 178,260 | 
        
            
                | 2015 | 180,960 | 
        
            
                | 2016 | 188,860 | 
        
            
                | 2017 | 198,470 | 
        
            
                | 2018 | 207,920 | 
        
    
         
        
        
        
        
            
        
        
        
            Motor Vehicle Operators, All Other
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 85,520 | 
        
            
                | 2005 | 76,500 | 
        
            
                | 2006 | 71,880 | 
        
            
                | 2007 | 77,660 | 
        
            
                | 2008 | 78,610 | 
        
            
                | 2009 | 73,410 | 
        
            
                | 2010 | 61,230 | 
        
            
                | 2011 | 61,600 | 
        
            
                | 2012 | 60,050 | 
        
            
                | 2013 | 63,200 | 
        
            
                | 2014 | 58,210 | 
        
            
                | 2015 | 54,160 | 
        
            
                | 2016 | 53,680 | 
        
            
                | 2017 | 56,950 | 
        
            
                | 2018 | 56,810 | 
        
            
                | 2019 | 56,590 | 
        
    
         
        
        
            
        
        
        
            Rail Transportation Workers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 122,720 | 
        
            
                | 2013 | 123,430 | 
        
            
                | 2014 | 122,880 | 
        
            
                | 2015 | 122,010 | 
        
            
                | 2016 | 125,200 | 
        
            
                | 2017 | 117,930 | 
        
            
                | 2018 | 109,470 | 
        
            
                | 2019 | 111,090 | 
        
    
         
        
        
        
        
            
        
        
        
            Locomotive Engineers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 31,180 | 
        
            
                | 2005 | 37,390 | 
        
            
                | 2006 | 36,870 | 
        
            
                | 2007 | 41,760 | 
        
            
                | 2008 | 42,760 | 
        
            
                | 2009 | 43,560 | 
        
            
                | 2010 | 40,750 | 
        
            
                | 2011 | 38,790 | 
        
            
                | 2012 | 37,060 | 
        
            
                | 2013 | 36,860 | 
        
            
                | 2014 | 38,470 | 
        
            
                | 2015 | 37,490 | 
        
            
                | 2016 | 39,900 | 
        
            
                | 2017 | 35,680 | 
        
            
                | 2018 | 34,850 | 
        
            
                | 2019 | 35,520 | 
        
    
         
        
        
            
        
        
        
            Rail Yard Engineers, Dinkey Operators, and Hostlers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 6,170 | 
        
            
                | 2005 | 6,970 | 
        
            
                | 2006 | 5,820 | 
        
            
                | 2007 | 4,950 | 
        
            
                | 2008 | 5,480 | 
        
            
                | 2009 | 5,360 | 
        
            
                | 2010 | 5,600 | 
        
            
                | 2011 | 5,060 | 
        
            
                | 2012 | 5,170 | 
        
            
                | 2013 | 5,140 | 
        
            
                | 2014 | 3,900 | 
        
            
                | 2015 | 4,460 | 
        
            
                | 2016 | 4,530 | 
        
            
                | 2017 | 6,140 | 
        
            
                | 2018 | 5,690 | 
        
            
                | 2019 | 5,400 | 
        
    
         
        
        
            
        
        
        
            Railroad Brake, Signal, and Switch Operators and Locomotive Firers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 25,960 | 
        
            
                | 2013 | 25,830 | 
        
            
                | 2014 | 22,670 | 
        
            
                | 2015 | 20,580 | 
        
            
                | 2016 | 21,070 | 
        
            
                | 2017 | 14,860 | 
        
            
                | 2018 | 14,830 | 
        
            
                | 2019 | 11,080 | 
        
    
         
        
        
            
        
        
        
            Railroad Brake, Signal, and Switch Operators and Locomotive Firers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 17,030 | 
        
            
                | 2005 | 21,240 | 
        
            
                | 2006 | 23,370 | 
        
            
                | 2007 | 23,700 | 
        
            
                | 2008 | 25,580 | 
        
            
                | 2009 | 25,230 | 
        
            
                | 2010 | 23,890 | 
        
            
                | 2011 | 25,500 | 
        
            
                | 2012 | 25,960 | 
        
            
                | 2013 | 25,830 | 
        
            
                | 2014 | 22,670 | 
        
            
                | 2015 | 20,580 | 
        
            
                | 2016 | 21,070 | 
        
            
                | 2017 | 14,860 | 
        
            
                | 2018 | 14,830 | 
        
            
                | 2019 | 11,080 | 
        
    
         
        
        
        
        
            
        
        
        
            Railroad Conductors and Yardmasters
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 35,720 | 
        
            
                | 2005 | 38,330 | 
        
            
                | 2006 | 37,110 | 
        
            
                | 2007 | 37,540 | 
        
            
                | 2008 | 39,580 | 
        
            
                | 2009 | 41,540 | 
        
            
                | 2010 | 42,700 | 
        
            
                | 2011 | 44,280 | 
        
            
                | 2012 | 42,740 | 
        
            
                | 2013 | 43,100 | 
        
            
                | 2014 | 42,900 | 
        
            
                | 2015 | 42,330 | 
        
            
                | 2016 | 42,880 | 
        
            
                | 2017 | 44,490 | 
        
            
                | 2018 | 42,360 | 
        
            
                | 2019 | 45,710 | 
        
    
         
        
        
        
        
            
        
        
        
            Subway and Streetcar Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 8,900 | 
        
            
                | 2005 | 7,430 | 
        
            
                | 2006 | 6,740 | 
        
            
                | 2007 | 6,600 | 
        
            
                | 2008 | 7,430 | 
        
            
                | 2009 | 6,050 | 
        
            
                | 2010 | 6,360 | 
        
            
                | 2011 | 5,920 | 
        
            
                | 2012 | 8,750 | 
        
            
                | 2013 | 8,930 | 
        
            
                | 2014 | 11,300 | 
        
            
                | 2015 | 12,600 | 
        
            
                | 2016 | 12,350 | 
        
            
                | 2017 | 12,070 | 
        
            
                | 2018 | 8,850 | 
        
            
                | 2019 | 10,730 | 
        
    
         
        
        
        
        
            
        
        
        
            Rail Transportation Workers, All Other
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 7,680 | 
        
            
                | 2005 | 7,500 | 
        
            
                | 2006 | 6,360 | 
        
            
                | 2007 | 5,210 | 
        
            
                | 2008 | 4,660 | 
        
            
                | 2009 | 4,310 | 
        
            
                | 2010 | 3,210 | 
        
            
                | 2011 | 2,400 | 
        
            
                | 2012 | 3,040 | 
        
            
                | 2013 | 3,570 | 
        
            
                | 2014 | 3,640 | 
        
            
                | 2015 | 4,550 | 
        
            
                | 2016 | 4,470 | 
        
            
                | 2017 | 4,690 | 
        
            
                | 2018 | 2,890 | 
        
            
                | 2019 | 2,650 | 
        
    
         
        
        
        
        
            
        
        
        
            Sailors and Marine Oilers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 31,500 | 
        
            
                | 2013 | 28,810 | 
        
            
                | 2014 | 27,640 | 
        
            
                | 2015 | 30,570 | 
        
            
                | 2016 | 32,530 | 
        
            
                | 2017 | 30,940 | 
        
            
                | 2018 | 32,220 | 
        
            
                | 2019 | 31,290 | 
        
    
         
        
        
            
        
        
        
            Sailors and Marine Oilers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 27,570 | 
        
            
                | 2005 | 31,090 | 
        
            
                | 2006 | 31,690 | 
        
            
                | 2007 | 32,520 | 
        
            
                | 2008 | 32,420 | 
        
            
                | 2009 | 31,950 | 
        
            
                | 2010 | 31,690 | 
        
            
                | 2011 | 31,280 | 
        
            
                | 2012 | 31,500 | 
        
            
                | 2013 | 28,810 | 
        
            
                | 2014 | 27,640 | 
        
            
                | 2015 | 30,570 | 
        
            
                | 2016 | 32,530 | 
        
            
                | 2017 | 30,940 | 
        
            
                | 2018 | 32,220 | 
        
            
                | 2019 | 31,290 | 
        
    
         
        
        
        
        
            
        
        
        
            Captains, Mates, and Pilots of Water Vessels
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 25,200 | 
        
            
                | 2005 | 28,570 | 
        
            
                | 2006 | 29,170 | 
        
            
                | 2007 | 30,540 | 
        
            
                | 2008 | 30,600 | 
        
            
                | 2009 | 30,450 | 
        
            
                | 2010 | 29,280 | 
        
            
                | 2011 | 30,220 | 
        
            
                | 2012 | 30,860 | 
        
            
                | 2013 | 30,290 | 
        
            
                | 2014 | 30,690 | 
        
            
                | 2015 | 33,110 | 
        
            
                | 2016 | 36,720 | 
        
            
                | 2017 | 35,780 | 
        
            
                | 2018 | 36,390 | 
        
            
                | 2019 | 33,370 | 
        
    
         
        
        
            
        
        
        
            Motorboat Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 2,830 | 
        
            
                | 2005 | 2,700 | 
        
            
                | 2006 | 2,450 | 
        
            
                | 2007 | 3,250 | 
        
            
                | 2008 | 3,380 | 
        
            
                | 2009 | 3,070 | 
        
            
                | 2010 | 2,480 | 
        
            
                | 2011 | 2,550 | 
        
            
                | 2012 | 3,040 | 
        
            
                | 2013 | 3,400 | 
        
            
                | 2014 | 4,060 | 
        
            
                | 2015 | 3,650 | 
        
            
                | 2016 | 3,290 | 
        
            
                | 2017 | 2,510 | 
        
            
                | 2018 | 2,510 | 
        
            
                | 2019 | 2,120 | 
        
    
         
        
        
            
        
        
        
            Ship Engineers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 10,760 | 
        
            
                | 2013 | 9,930 | 
        
            
                | 2014 | 10,060 | 
        
            
                | 2015 | 9,940 | 
        
            
                | 2016 | 9,750 | 
        
            
                | 2017 | 7,890 | 
        
            
                | 2018 | 8,740 | 
        
            
                | 2019 | 8,410 | 
        
    
         
        
        
            
        
        
        
            Ship Engineers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 10,330 | 
        
            
                | 2005 | 13,240 | 
        
            
                | 2006 | 14,190 | 
        
            
                | 2007 | 13,710 | 
        
            
                | 2008 | 11,190 | 
        
            
                | 2009 | 10,850 | 
        
            
                | 2010 | 9,470 | 
        
            
                | 2011 | 10,010 | 
        
            
                | 2012 | 10,760 | 
        
            
                | 2013 | 9,930 | 
        
            
                | 2014 | 10,060 | 
        
            
                | 2015 | 9,940 | 
        
            
                | 2016 | 9,750 | 
        
            
                | 2017 | 7,890 | 
        
            
                | 2018 | 8,740 | 
        
            
                | 2019 | 8,410 | 
        
    
         
        
        
            
        
        
        
            Other Transportation Workers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 329,120 | 
        
            
                | 2013 | 338,090 | 
        
            
                | 2014 | 331,580 | 
        
            
                | 2015 | 343,220 | 
        
            
                | 2016 | 349,560 | 
        
            
                | 2017 | 367,320 | 
        
            
                | 2018 | 363,130 | 
        
            
                | 2019 | 368,840 | 
        
    
         
        
        
            
        
        
        
            Bridge and Lock Tenders
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 3,460 | 
        
            
                | 2013 | 3,170 | 
        
            
                | 2014 | 3,280 | 
        
            
                | 2015 | 3,170 | 
        
            
                | 2016 | 3,510 | 
        
            
                | 2017 | 3,240 | 
        
            
                | 2018 | 3,170 | 
        
            
                | 2019 | 3,150 | 
        
    
         
        
        
            
        
        
        
            Bridge and Lock Tenders
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 3,500 | 
        
            
                | 2005 | 3,620 | 
        
            
                | 2006 | 3,700 | 
        
            
                | 2007 | 4,750 | 
        
            
                | 2008 | 4,490 | 
        
            
                | 2009 | 4,290 | 
        
            
                | 2010 | 3,250 | 
        
            
                | 2011 | 3,420 | 
        
            
                | 2012 | 3,460 | 
        
            
                | 2013 | 3,170 | 
        
            
                | 2014 | 3,280 | 
        
            
                | 2015 | 3,170 | 
        
            
                | 2016 | 3,510 | 
        
            
                | 2017 | 3,240 | 
        
            
                | 2018 | 3,170 | 
        
            
                | 2019 | 3,150 | 
        
    
         
        
        
            
        
        
        
            Parking Attendants
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 126,520 | 
        
            
                | 2013 | 130,190 | 
        
            
                | 2014 | 136,440 | 
        
            
                | 2015 | 144,150 | 
        
            
                | 2016 | 146,350 | 
        
            
                | 2017 | 145,400 | 
        
            
                | 2018 | 145,900 | 
        
            
                | 2019 | 147,390 | 
        
    
         
        
        
            
        
        
        
            Parking Attendants
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 120,080 | 
        
            
                | 2005 | 124,250 | 
        
            
                | 2006 | 131,870 | 
        
            
                | 2007 | 131,860 | 
        
            
                | 2008 | 136,470 | 
        
            
                | 2009 | 129,990 | 
        
            
                | 2010 | 124,590 | 
        
            
                | 2011 | 126,160 | 
        
            
                | 2012 | 126,520 | 
        
            
                | 2013 | 130,190 | 
        
            
                | 2014 | 136,440 | 
        
            
                | 2015 | 144,150 | 
        
            
                | 2016 | 146,350 | 
        
            
                | 2017 | 145,400 | 
        
            
                | 2018 | 145,900 | 
        
            
                | 2019 | 147,390 | 
        
    
         
        
        
        
        
            
        
        
        
            Automotive and Watercraft Service Attendants
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 90,640 | 
        
            
                | 2005 | 96,340 | 
        
            
                | 2006 | 94,780 | 
        
            
                | 2007 | 93,140 | 
        
            
                | 2008 | 84,480 | 
        
            
                | 2009 | 79,480 | 
        
            
                | 2010 | 86,440 | 
        
            
                | 2011 | 102,090 | 
        
            
                | 2012 | 108,510 | 
        
            
                | 2013 | 112,970 | 
        
            
                | 2014 | 104,750 | 
        
            
                | 2015 | 109,710 | 
        
            
                | 2016 | 109,790 | 
        
            
                | 2017 | 118,850 | 
        
            
                | 2018 | 113,760 | 
        
            
                | 2019 | 117,670 | 
        
    
         
        
        
            
        
        
        
            Traffic Technicians
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 6,340 | 
        
            
                | 2013 | 6,220 | 
        
            
                | 2014 | 6,490 | 
        
            
                | 2015 | 6,750 | 
        
            
                | 2016 | 6,410 | 
        
            
                | 2017 | 6,980 | 
        
            
                | 2018 | 7,290 | 
        
            
                | 2019 | 7,470 | 
        
    
         
        
        
            
        
        
        
            Traffic Technicians
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 6,240 | 
        
            
                | 2005 | 6,990 | 
        
            
                | 2006 | 6,560 | 
        
            
                | 2007 | 6,550 | 
        
            
                | 2008 | 7,030 | 
        
            
                | 2009 | 6,570 | 
        
            
                | 2010 | 6,730 | 
        
            
                | 2011 | 6,280 | 
        
            
                | 2012 | 6,340 | 
        
            
                | 2013 | 6,220 | 
        
            
                | 2014 | 6,490 | 
        
            
                | 2015 | 6,750 | 
        
            
                | 2016 | 6,410 | 
        
            
                | 2017 | 6,980 | 
        
            
                | 2018 | 7,290 | 
        
            
                | 2019 | 7,470 | 
        
    
         
        
        
            
        
        
        
            Transportation Inspectors
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 24,310 | 
        
            
                | 2013 | 23,970 | 
        
            
                | 2014 | 24,350 | 
        
            
                | 2015 | 25,860 | 
        
            
                | 2016 | 27,430 | 
        
            
                | 2017 | 30,030 | 
        
            
                | 2018 | 29,990 | 
        
            
                | 2019 | 30,020 | 
        
    
         
        
        
            
        
        
        
            Transportation Inspectors
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 24,140 | 
        
            
                | 2005 | 25,570 | 
        
            
                | 2006 | 23,790 | 
        
            
                | 2007 | 24,130 | 
        
            
                | 2008 | 24,940 | 
        
            
                | 2009 | 24,250 | 
        
            
                | 2010 | 24,280 | 
        
            
                | 2011 | 24,810 | 
        
            
                | 2012 | 24,310 | 
        
            
                | 2013 | 23,970 | 
        
            
                | 2014 | 24,350 | 
        
            
                | 2015 | 25,860 | 
        
            
                | 2016 | 27,430 | 
        
            
                | 2017 | 30,030 | 
        
            
                | 2018 | 29,990 | 
        
            
                | 2019 | 30,020 | 
        
    
         
        
        
            
        
        
        
            Passenger Attendants
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 23,790 | 
        
            
                | 2013 | 21,280 | 
        
            
                | 2014 | 16,380 | 
        
            
                | 2015 | 15,680 | 
        
            
                | 2016 | 18,410 | 
        
            
                | 2017 | 24,360 | 
        
            
                | 2018 | 25,460 | 
        
            
                | 2019 | 28,200 | 
        
    
         
        
        
            
        
        
        
            Passenger Attendants
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 27,730 | 
        
            
                | 2005 | 24,810 | 
        
            
                | 2006 | 20,790 | 
        
            
                | 2007 | 20,690 | 
        
            
                | 2008 | 21,870 | 
        
            
                | 2009 | 22,450 | 
        
            
                | 2010 | 25,150 | 
        
            
                | 2011 | 27,040 | 
        
            
                | 2012 | 23,790 | 
        
            
                | 2013 | 21,280 | 
        
            
                | 2014 | 16,380 | 
        
            
                | 2015 | 15,680 | 
        
            
                | 2016 | 18,410 | 
        
            
                | 2017 | 24,360 | 
        
            
                | 2018 | 25,460 | 
        
            
                | 2019 | 28,200 | 
        
    
         
        
        
        
        
            
        
        
        
            Transportation Workers, All Other
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 51,850 | 
        
            
                | 2005 | 54,010 | 
        
            
                | 2006 | 42,130 | 
        
            
                | 2007 | 46,720 | 
        
            
                | 2008 | 43,330 | 
        
            
                | 2009 | 39,870 | 
        
            
                | 2010 | 32,760 | 
        
            
                | 2011 | 30,180 | 
        
            
                | 2012 | 36,190 | 
        
            
                | 2013 | 40,290 | 
        
            
                | 2014 | 39,890 | 
        
            
                | 2015 | 37,900 | 
        
            
                | 2016 | 37,660 | 
        
            
                | 2017 | 38,460 | 
        
            
                | 2018 | 37,560 | 
        
    
         
        
        
            
        
        
        
            Material Moving Workers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 5,836,520 | 
        
            
                | 2013 | 5,995,960 | 
        
            
                | 2014 | 6,236,180 | 
        
            
                | 2015 | 6,423,920 | 
        
            
                | 2016 | 6,593,150 | 
        
            
                | 2017 | 6,773,710 | 
        
            
                | 2018 | 6,962,890 | 
        
            
                | 2019 | 7,061,360 | 
        
    
         
        
        
        
        
            
        
        
        
            Conveyor Operators and Tenders
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 54,380 | 
        
            
                | 2005 | 49,220 | 
        
            
                | 2006 | 50,080 | 
        
            
                | 2007 | 45,580 | 
        
            
                | 2008 | 41,920 | 
        
            
                | 2009 | 38,730 | 
        
            
                | 2010 | 36,810 | 
        
            
                | 2011 | 37,200 | 
        
            
                | 2012 | 39,540 | 
        
            
                | 2013 | 40,760 | 
        
            
                | 2014 | 38,830 | 
        
            
                | 2015 | 32,890 | 
        
            
                | 2016 | 28,590 | 
        
            
                | 2017 | 26,570 | 
        
            
                | 2018 | 23,390 | 
        
            
                | 2019 | 24,050 | 
        
    
         
        
        
            
        
        
        
            Crane and Tower Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 43,040 | 
        
            
                | 2013 | 41,580 | 
        
            
                | 2014 | 44,540 | 
        
            
                | 2015 | 46,490 | 
        
            
                | 2016 | 45,020 | 
        
            
                | 2017 | 43,660 | 
        
            
                | 2018 | 44,410 | 
        
            
                | 2019 | 45,480 | 
        
    
         
        
        
            
        
        
        
            Crane and Tower Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 43,570 | 
        
            
                | 2005 | 43,690 | 
        
            
                | 2006 | 45,740 | 
        
            
                | 2007 | 45,720 | 
        
            
                | 2008 | 44,490 | 
        
            
                | 2009 | 40,770 | 
        
            
                | 2010 | 39,510 | 
        
            
                | 2011 | 41,070 | 
        
            
                | 2012 | 43,040 | 
        
            
                | 2013 | 41,580 | 
        
            
                | 2014 | 44,540 | 
        
            
                | 2015 | 46,490 | 
        
            
                | 2016 | 45,020 | 
        
            
                | 2017 | 43,660 | 
        
            
                | 2018 | 44,410 | 
        
            
                | 2019 | 45,480 | 
        
    
         
        
        
            
        
        
        
            Dredge Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 1,740 | 
        
            
                | 2013 | 1,750 | 
        
            
                | 2014 | 1,900 | 
        
            
                | 2015 | 1,850 | 
        
            
                | 2016 | 1,760 | 
        
            
                | 2017 | 1,410 | 
        
            
                | 2018 | 1,190 | 
        
            
                | 2019 | 1,550 | 
        
    
         
        
        
            
        
        
        
            Dredge Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 1,730 | 
        
            
                | 2005 | 1,720 | 
        
            
                | 2006 | 1,780 | 
        
            
                | 2007 | 1,910 | 
        
            
                | 2008 | 1,910 | 
        
            
                | 2009 | 1,990 | 
        
            
                | 2010 | 1,720 | 
        
            
                | 2011 | 1,590 | 
        
            
                | 2012 | 1,740 | 
        
            
                | 2013 | 1,750 | 
        
            
                | 2014 | 1,900 | 
        
            
                | 2015 | 1,850 | 
        
            
                | 2016 | 1,760 | 
        
            
                | 2017 | 1,410 | 
        
            
                | 2018 | 1,190 | 
        
            
                | 2019 | 1,550 | 
        
    
         
        
        
            
        
        
        
            Hoist and Winch Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 3,050 | 
        
            
                | 2013 | 2,980 | 
        
            
                | 2014 | 2,840 | 
        
            
                | 2015 | 2,880 | 
        
            
                | 2016 | 2,960 | 
        
            
                | 2017 | 3,080 | 
        
            
                | 2018 | 3,180 | 
        
            
                | 2019 | 4,800 | 
        
    
         
        
        
            
        
        
        
            Hoist and Winch Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 5,550 | 
        
            
                | 2005 | 3,110 | 
        
            
                | 2006 | 2,990 | 
        
            
                | 2007 | 3,220 | 
        
            
                | 2008 | 2,810 | 
        
            
                | 2009 | 2,990 | 
        
            
                | 2010 | 2,810 | 
        
            
                | 2011 | 3,320 | 
        
            
                | 2012 | 3,050 | 
        
            
                | 2013 | 2,980 | 
        
            
                | 2014 | 2,840 | 
        
            
                | 2015 | 2,880 | 
        
            
                | 2016 | 2,960 | 
        
            
                | 2017 | 3,080 | 
        
            
                | 2018 | 3,180 | 
        
            
                | 2019 | 4,800 | 
        
    
         
        
        
        
        
            
        
        
        
            Industrial Truck and Tractor Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 631,530 | 
        
            
                | 2005 | 627,060 | 
        
            
                | 2006 | 629,100 | 
        
            
                | 2007 | 630,700 | 
        
            
                | 2008 | 620,450 | 
        
            
                | 2009 | 568,270 | 
        
            
                | 2010 | 518,350 | 
        
            
                | 2011 | 503,290 | 
        
            
                | 2012 | 496,570 | 
        
            
                | 2013 | 504,560 | 
        
            
                | 2014 | 521,840 | 
        
            
                | 2015 | 539,810 | 
        
            
                | 2016 | 542,750 | 
        
            
                | 2017 | 570,300 | 
        
            
                | 2018 | 604,130 | 
        
            
                | 2019 | 629,270 | 
        
    
         
        
        
            
        
        
        
            Laborers and Material Movers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 5,019,670 | 
        
            
                | 2013 | 5,175,180 | 
        
            
                | 2014 | 5,398,600 | 
        
            
                | 2015 | 5,571,850 | 
        
            
                | 2016 | 5,746,740 | 
        
            
                | 2017 | 5,905,560 | 
        
            
                | 2018 | 6,058,410 | 
        
            
                | 2019 | 6,168,610 | 
        
    
         
        
        
            
        
        
        
            Cleaners of Vehicles and Equipment
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 330,520 | 
        
            
                | 2005 | 333,350 | 
        
            
                | 2006 | 334,560 | 
        
            
                | 2007 | 336,210 | 
        
            
                | 2008 | 330,850 | 
        
            
                | 2009 | 298,500 | 
        
            
                | 2010 | 288,110 | 
        
            
                | 2011 | 290,780 | 
        
            
                | 2012 | 302,960 | 
        
            
                | 2013 | 311,940 | 
        
            
                | 2014 | 321,740 | 
        
            
                | 2015 | 336,960 | 
        
            
                | 2016 | 348,770 | 
        
            
                | 2017 | 373,290 | 
        
            
                | 2018 | 378,850 | 
        
            
                | 2019 | 382,670 | 
        
    
         
        
        
            
        
        
        
            Laborers and Freight, Stock, and Material Movers, Hand
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 2,390,910 | 
        
            
                | 2005 | 2,363,960 | 
        
            
                | 2006 | 2,372,130 | 
        
            
                | 2007 | 2,363,440 | 
        
            
                | 2008 | 2,335,510 | 
        
            
                | 2009 | 2,135,790 | 
        
            
                | 2010 | 2,024,180 | 
        
            
                | 2011 | 2,063,580 | 
        
            
                | 2012 | 2,143,940 | 
        
            
                | 2013 | 2,284,650 | 
        
            
                | 2014 | 2,400,490 | 
        
            
                | 2015 | 2,487,680 | 
        
            
                | 2016 | 2,587,900 | 
        
            
                | 2017 | 2,711,320 | 
        
            
                | 2018 | 2,893,180 | 
        
            
                | 2019 | 2,953,170 | 
        
    
         
        
        
            
        
        
        
            Machine Feeders and Offbearers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 149,500 | 
        
            
                | 2005 | 145,740 | 
        
            
                | 2006 | 150,600 | 
        
            
                | 2007 | 143,140 | 
        
            
                | 2008 | 144,820 | 
        
            
                | 2009 | 129,180 | 
        
            
                | 2010 | 119,730 | 
        
            
                | 2011 | 110,950 | 
        
            
                | 2012 | 105,790 | 
        
            
                | 2013 | 106,160 | 
        
            
                | 2014 | 104,340 | 
        
            
                | 2015 | 100,020 | 
        
            
                | 2016 | 88,070 | 
        
            
                | 2017 | 74,350 | 
        
            
                | 2018 | 66,380 | 
        
            
                | 2019 | 63,280 | 
        
    
         
        
        
            
        
        
        
            Packers and Packagers, Hand
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 872,260 | 
        
            
                | 2005 | 840,410 | 
        
            
                | 2006 | 827,470 | 
        
            
                | 2007 | 798,450 | 
        
            
                | 2008 | 777,630 | 
        
            
                | 2009 | 706,240 | 
        
            
                | 2010 | 676,870 | 
        
            
                | 2011 | 666,860 | 
        
            
                | 2012 | 660,670 | 
        
            
                | 2013 | 672,020 | 
        
            
                | 2014 | 693,170 | 
        
            
                | 2015 | 713,130 | 
        
            
                | 2016 | 705,660 | 
        
            
                | 2017 | 700,560 | 
        
            
                | 2018 | 663,970 | 
        
            
                | 2019 | 633,640 | 
        
    
         
        
        
            
        
        
        
            Stockers and Order Fillers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 1,561,530 | 
        
            
                | 2005 | 1,625,430 | 
        
            
                | 2006 | 1,705,450 | 
        
            
                | 2007 | 1,817,650 | 
        
            
                | 2008 | 1,873,390 | 
        
            
                | 2009 | 1,864,410 | 
        
            
                | 2010 | 1,795,970 | 
        
            
                | 2011 | 1,782,800 | 
        
            
                | 2012 | 1,806,310 | 
        
            
                | 2013 | 1,800,410 | 
        
            
                | 2014 | 1,878,860 | 
        
            
                | 2015 | 1,934,060 | 
        
            
                | 2016 | 2,016,340 | 
        
            
                | 2017 | 2,046,040 | 
        
            
                | 2018 | 2,056,030 | 
        
            
                | 2019 | 2,135,850 | 
        
    
         
        
        
            
        
        
        
            Pumping Station Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 30,570 | 
        
            
                | 2013 | 31,100 | 
        
            
                | 2014 | 29,590 | 
        
            
                | 2015 | 30,350 | 
        
            
                | 2016 | 27,530 | 
        
            
                | 2017 | 26,260 | 
        
            
                | 2018 | 27,560 | 
        
            
                | 2019 | 26,410 | 
        
    
         
        
        
            
        
        
        
            Gas Compressor and Gas Pumping Station Operators
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 4,680 | 
        
            
                | 2005 | 3,950 | 
        
            
                | 2006 | 3,900 | 
        
            
                | 2007 | 4,230 | 
        
            
                | 2008 | 4,050 | 
        
            
                | 2009 | 4,160 | 
        
            
                | 2010 | 4,040 | 
        
            
                | 2011 | 3,870 | 
        
            
                | 2012 | 4,350 | 
        
            
                | 2013 | 4,520 | 
        
            
                | 2014 | 4,700 | 
        
            
                | 2015 | 4,100 | 
        
            
                | 2016 | 3,890 | 
        
            
                | 2017 | 3,560 | 
        
            
                | 2018 | 3,460 | 
        
            
                | 2019 | 3,440 | 
        
    
         
        
        
            
        
        
        
            Pump Operators, Except Wellhead Pumpers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 9,810 | 
        
            
                | 2005 | 9,970 | 
        
            
                | 2006 | 10,030 | 
        
            
                | 2007 | 10,400 | 
        
            
                | 2008 | 9,280 | 
        
            
                | 2009 | 10,310 | 
        
            
                | 2010 | 9,440 | 
        
            
                | 2011 | 12,150 | 
        
            
                | 2012 | 11,870 | 
        
            
                | 2013 | 13,170 | 
        
            
                | 2014 | 12,170 | 
        
            
                | 2015 | 13,390 | 
        
            
                | 2016 | 12,030 | 
        
            
                | 2017 | 11,500 | 
        
            
                | 2018 | 10,820 | 
        
            
                | 2019 | 10,000 | 
        
    
         
        
        
            
        
        
        
            Wellhead Pumpers
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 10,040 | 
        
            
                | 2005 | 10,190 | 
        
            
                | 2006 | 13,280 | 
        
            
                | 2007 | 15,780 | 
        
            
                | 2008 | 17,050 | 
        
            
                | 2009 | 15,360 | 
        
            
                | 2010 | 12,960 | 
        
            
                | 2011 | 13,190 | 
        
            
                | 2012 | 14,350 | 
        
            
                | 2013 | 13,410 | 
        
            
                | 2014 | 12,720 | 
        
            
                | 2015 | 12,860 | 
        
            
                | 2016 | 11,610 | 
        
            
                | 2017 | 11,200 | 
        
            
                | 2018 | 13,280 | 
        
            
                | 2019 | 12,970 | 
        
    
         
        
        
        
        
            
        
        
        
            Refuse and Recyclable Material Collectors
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 139,920 | 
        
            
                | 2005 | 133,930 | 
        
            
                | 2006 | 125,770 | 
        
            
                | 2007 | 126,270 | 
        
            
                | 2008 | 129,080 | 
        
            
                | 2009 | 128,940 | 
        
            
                | 2010 | 126,360 | 
        
            
                | 2011 | 123,160 | 
        
            
                | 2012 | 117,670 | 
        
            
                | 2013 | 116,460 | 
        
            
                | 2014 | 115,170 | 
        
            
                | 2015 | 114,220 | 
        
            
                | 2016 | 114,680 | 
        
            
                | 2017 | 115,130 | 
        
            
                | 2018 | 118,520 | 
        
            
                | 2019 | 121,330 | 
        
    
         
        
        
            
        
        
        
            Tank Car, Truck, and Ship Loaders
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2012 | 12,390 | 
        
            
                | 2013 | 12,560 | 
        
            
                | 2014 | 12,490 | 
        
            
                | 2015 | 11,960 | 
        
            
                | 2016 | 10,920 | 
        
            
                | 2017 | 10,300 | 
        
            
                | 2018 | 9,000 | 
        
            
                | 2019 | 11,620 | 
        
    
         
        
        
            
        
        
        
            Tank Car, Truck, and Ship Loaders
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 16,530 | 
        
            
                | 2005 | 15,950 | 
        
            
                | 2006 | 15,360 | 
        
            
                | 2007 | 14,870 | 
        
            
                | 2008 | 12,330 | 
        
            
                | 2009 | 11,560 | 
        
            
                | 2010 | 10,390 | 
        
            
                | 2011 | 10,960 | 
        
            
                | 2012 | 12,390 | 
        
            
                | 2013 | 12,560 | 
        
            
                | 2014 | 12,490 | 
        
            
                | 2015 | 11,960 | 
        
            
                | 2016 | 10,920 | 
        
            
                | 2017 | 10,300 | 
        
            
                | 2018 | 9,000 | 
        
            
                | 2019 | 11,620 | 
        
    
         
        
        
        
        
            
        
        
        
            Material Moving Workers, All Other
                
    
    
        
        
        
    
    
        
    
    
        
            | Year | Number | 
        
            
                | 2004 | 124,470 | 
        
            
                | 2005 | 119,000 | 
        
            
                | 2006 | 119,710 | 
        
            
                | 2007 | 111,880 | 
        
            
                | 2008 | 106,300 | 
        
            
                | 2009 | 90,170 | 
        
            
                | 2010 | 77,180 | 
        
            
                | 2011 | 75,900 | 
        
            
                | 2012 | 72,280 | 
        
            
                | 2013 | 69,030 | 
        
            
                | 2014 | 70,380 | 
        
            
                | 2015 | 71,620 | 
        
            
                | 2016 | 72,200 | 
        
            
                | 2017 | 71,440 | 
        
            
                | 2018 | 73,100 | 
        
            
                | 2019 | 28,240 |