stylistic:style_transfer, structural:summarization
United States

A December 2008 report from the National Bureau of Economic Research stated that the U.S. had been in a recession since December 2007, when economic activity peaked, based on several measures including job losses, declines in personal income, and declines in real GDP. By July 2009, a growing number of economists believed that the recession may have ended. The National Bureau of Economic Research announced on 20 September 2010 that the 2008/2009 recession ended in June 2009, making it the longest recession since World War II. Prior to the start of the recession, it appears that no known formal theoretical or empirical model was able to accurately predict the advance of this recession, except for minor signals in the sudden rise of forecasted probabilities, which were still well under 50%.