"As part of an annual revision of data on U.S. gross domestic product, the Commerce Department said that the economy contracted by 5.1% between the fourth quarter of 2007 and the second quarter of 2009, more than the 4.1% previously estimated.
It ranks as the most severe recession in the post-World War II era.
As a result of the revision, GDP is now still below the pre-recession peak, economists said."
"Under the revised data, the U.S. economy declined 0.3% in 2008, weaker than the prior estimate of a flat reading.
The contraction in GDP for 2009 was revised to 3.5%, much weaker than the previous estimate of a 2.6% decline.
The economy grew a little faster in 2010 than previously estimated, rising 3% compared with the prior estimate of 2.9%."
http://www.marketwatch.com/story/great-recession-even-deeper-than-thought-2011-07-29
Korábbi GDP adatokat is felülvizsgálták.