Source: U.S. Bureau of Economic Analysis
Release: Gross Domestic Product
BEA Account Code: DPSTRA
For more information about this series, please see http://www.bea.gov/national/."
U.S. Bureau of Economic Analysis, Real personal consumption expenditures: Communication: First-class postal service by U.S. Postal Service (USPS) (chain-type quantity index) [DPSTRA3A086NBEA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/DPSTRA3A086NBEA, March 20, 2018.