Source: U.S. Bureau of Economic Analysis
Release: Gross Domestic Product
BEA Account Code: E318RA
For more information about this series, please see http://www.bea.gov/national/."
U.S. Bureau of Economic Analysis, Real private fixed investment: Nonresidential: Structures: Mining exploration, shafts, and wells (chain-type quantity index) [E318RA3A086NBEA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/E318RA3A086NBEA, May 26, 2018.