NOTE: Because of rounding and data exclusion of nonclassifiable responses, data may not sum to the totals. Dashes indicate data that do not meet publication guidelines. The scientifically selected probability sample used was one of many possible samples, each of which could have produced different estimates. A measure of sampling variability for each estimate is available upon request -- please contact firstname.lastname@example.org or call (202) 691-6170.
SOURCE: Bureau of Labor Statistics, U.S. Department of Labor, Feb 22, 2008