National budget deficit--total debt as a percentage of GDP:about 65% as of 2007
image source: http://zfacts.com/p/318.html
http://www.treasurydirect.gov/NP/BPDLogin?application=np
http://www.whitehouse.gov/omb/budget/fy2009/pdf/hist.pdf
http://www.brillig.com/debt_clock/
