http://en.wikipedia.org/wiki/Image:USDebt.png
------------------------------------------------------------------------------
*For some perspective...According to the CIA World Factbook, note Country's X public debt % of GDP:
Japan --> 194%
Germany --> 65%
Canada --> 64%
India --> 59%
Brazil --> 44%
UK --> 43%
US --> 37%
Saudi Arabia --> 23%
China --> 19%
Australia --> 15%
Russia --> 7%
https://www.cia.gov/library/publications/the-world-factbook/rankorder/2186rank.html
Data Courtesy: Wikipedia.com + CIA World Factbook.