21a . Construction employment, payroll employment vs. all employment, 1992-2010
21a . Construction employment, payroll employment vs. all employment, 1992-2010. 21b . Year-over-year change in payroll employment , construction vs. all nonfarm, 1992-2011. 21c. Percent change in payroll employment since 1992 , by construction sector , 1992-2011.
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