On April 8, 2015, usgovernmentspending.com updated its GDP series with the latest data from the Bureau of Economic Analysis
, including nominal GDP for calendar 2014 of $17.419 trillion and real GDP for calendar 2014 of $16.086 trillion in 2009 dollars. GDP for some years previous to 2014 have been revised by BEA.
Usgovernmentspending.com uses the BEA GDP data series from 1929 to the present and measuringworth.com
as its GDP source from 1790 to 1928..