Source: U.S. Bureau of Economic Analysis
Release: Gross Domestic Product
BEA Account Code: B4910C
For more information about this series, please see http://www.bea.gov/national/."
U.S. Bureau of Economic Analysis, Employer contributions for employee pension and insurance funds: Domestic private industries: Transportation and public utilities [B4910C0A144NBEA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/B4910C0A144NBEA, March 18, 2018.