Who said zombie economy ?
I have analyzed the mathematical trend of these data in another article.
At this time here are the daily data from 2001 to 2012 and the resulting graph :
Update 05/25: You can find a longer data serie directly on FRED :
data serie since 1966, in % of GDP, chained 2005 dollar; updated quarterly
Update 10/05 : I add below an extract from the dedicated page about US Debt.
1Year data serie, in % of GDP, chained 2005 dollar; updated quarterly
You read it correctly : figure for 2012Q3 is nearly 118 % (and growing) !!