Appendix table 2. Number of workers(1) represented, private industry, National Compensation Survey, 2011 Estimated Occupational group(2) number of workers All workers............................. 100,512,700 Management, professional, and related 25,471,900 Management, business, and financial 9,740,400 Professional and related............ 15,731,500 Service............................... 22,388,400 Protective service.................. 1,438,700 Sales and office...................... 28,662,000 Sales and related................... 11,844,100 Office and administrative support... 16,817,800 Natural resources, construction, and maintenance........................... 8,094,400 Construction, extraction, farming, fishing, and forestry............... 3,352,200 Installation, maintenance, and repair.............................. 4,742,200 Production, transportation, and material moving....................... 15,896,100 Production.......................... 7,957,100 Transportation and material moving.. 7,938,900 1 The number of workers represented by the survey are rounded to the nearest 100. Estimates of the number of workers provide a description of the size and composition of the labor force included in the survey. Estimates are not intended, however, for comparison to other statistical series to measure employment trends or levels. 2 The 2000 Standard Occupational Classification system is used to classify workers.