The demographic data include information on age, sex, marital status, race, educational attainment, place of birth, and migration experience. Many of these data are cross-tabulated by race and sex. The data on vital statistics (live birth, deaths, marriage, and divorce) are collected separately to supplement the demographic data. The data on civilian employment include information on labor force status, class of worker, industry and occupation. These data are also cross-tabulated by race and sex whenever data are available. The employment information on mining for 1940-70, oil/natural gas for 1980-90, and the location quotient for employment in the mining industry for 1940-90 are also added to facilitate the analysis on oil dependency