Some believe the govt is manipulating the economic numbers for political reasons.
Look at the unemployment figures. In December, the govt said only 11,000 jobs were lost in November 2009. Nongovernment sources (the ADP National Employment Report, for example) said about 84,000 jobs were lost in November 2009. Thats a big difference. But guess what, after revising the numbers in January 2010, the ADP report says 61,000 jobs were lost in November, and the Dept of Labor changed theirs to 64,000 jobs lost in November.
Why? Christmas was coming, the holiday season can make or break a company financially. That is when most retailers make a major portion of their sales and boost their work force in anticipation of robust sales. Bad economic news makes the consumer spend less, which means a bad sales season, which means companies don't make the money they need to stay in business and keep employees. If people think the economy has turned around and consumers spend freely, it could mean a good year for a lot of companies.
The Dept of Labor knew what it was doing. The govt lied hoping to trick people into spending and thereby jumpstarting the economy.
And here is another data point, the ADP and the Dept of Labor statistics tracked pretty closely for many years until April 2009, when the govt estimates became much more optimistic and showed lower unemployment than nongovt sources.