Source: U.S. Bureau of Economic Analysis
Release: Gross Domestic Product
BEA Account Code: B4503C
For more information about this series, please see http://www.bea.gov/national/."
U.S. Bureau of Economic Analysis, Self-employed persons: Farms [B4503C0A173NBEA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/B4503C0A173NBEA, January 21, 2018.