Source: US. Bureau of Economic Analysis
Release: Gross Domestic Product
BEA Account Code: CON5201
For more information about this series, please see http://www.bea.gov/national/.
US. Bureau of Economic Analysis, Contributions for government social insurance: Employee and self-employed contributions: Federal social insurance funds: Old-age, survivors, disability, and hospital insurance: Self-employed [CON5201A027NBEA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CON5201A027NBEA, July 28, 2016.