http://www.treasurydirect.gov/NP/NPGateway US National Debt
12/31/2008 ........................
........................
.....................10,699,804,864,612.13
11/05/2010....................................................................... 13,723,330,060,510.52
Bush first day ........................
........................
........................
................5,776,091,314,225.33
Last....................
........................
........................
...13,723,330,060,510.52