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Annual Statistical Supplement to the Social Security Bulletin, Table 4.C.5. (...
Social Security Administration data (from the 2011 Annual Statistical Supplement to the Social Security Bulletin) on the estimated size of the population in the Social Security... -
Annual Statistical Supplement to the Social Security Bulletin, Table 4.C.5. (...
Social Security Administration data (from the Annual Statistical Supplement to the 2015 Social Security Bulletin) on the estimated size of the population in the Social Security...