Source: U.S. Bureau of Economic Analysis  

Release: Gross Domestic Product  

Units:  Billions of Chained 2009 Dollars, Seasonally Adjusted Annual Rate

Frequency:  Quarterly

This series has been discontinued and will no longer be updated. It was a duplicate of the following series, which will continue to be updated: https://fred.stlouisfed.org/series/GDPC1

A Guide to the National Income and Product Accounts of the United States (NIPA) - (http://www.bea.gov/national/pdf/nipaguid.pdf)