Source: U.S. Bureau of Economic Analysis
Release: Gross Domestic Product
BEA Account Code: Y800RZ
A Guide to the National Income and Product Accounts of the United States (NIPA) - (http://www.bea.gov/national/pdf/nipaguid.pdf)
U.S. Bureau of Economic Analysis, Contributions to percent change in Exports of goods and services: Export of services: Transport [Y800RZ2A224NBEA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/Y800RZ2A224NBEA, December 11, 2019.