Looking at the last 8 completed presidential terms, the average annual change in GDP when a Democrat has been in office has been 3%, while the average annual change in GDP when a Republican has been in office has only been 2.5%.
How is this possible, when everybody knows that conservatives are the ones who know how to make the economy work and liberals only know how to make people less free?
This obviously demonstrates that the Gross Domestic Product suffers from a liberal bias!!!
Source: Budget of the United States Government