January 2007 vs. Now - What Happened?

At the risk of gross oversimplification, here is some US Economic data:

Item January 2007 Now

Unemployment Rate 4.5% 6.1%

CPI (incl. food and energy) 2% 5.5%

Gasoline cost/gallon $2.25 $3.60

Dow Jones Industrial Ave 12,500 10,325

S&P 500 1,450 1,099

Nasdaq 2,500 1,947

What happened in January 2007? The Democrats took control of Congress. No wonder the Congressional approval rating is worse than Bush's.