Source: U.S. Bureau of Economic Analysis
Release: Gross Domestic Product
BEA Account Code: G17096
For more information about this series, please see http://www.bea.gov/national/."
U.S. Bureau of Economic Analysis, Federal government subsidies: Economic affairs: Transportation [G170961A027NBEA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/G170961A027NBEA, January 23, 2018.