Source: U.S. Bureau of Economic Analysis
Release: Gross Domestic Product
BEA Account Code: B228RC
For more information about this series, please see http://www.bea.gov/national/."
U.S. Bureau of Economic Analysis, Contributions for government social insurance: Employee and self-employed contributions [B228RC1A027NBEA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/B228RC1A027NBEA, December 15, 2017.