Figure I.2. Sector shares, 1800–2010

Sources: 1800–1900 (1930): Carter et al. (2006, series Ba 814–830); 1910–1990 (with 1930 interpolated): Carter et al. (2006, series Ba 652–659); 2000 and 2010: US Bureau of Labor Statistics, “Employment and Earnings Online,” January 2011 issue, published March 2011, http://www.bls.gov/opub/ee/home.htm and http://www.bls.gov/cps/home.htm, Table 619.