"2/5ths of the increase during President Obama's presidency occurred during the first year while the country was still in the midst of the Great Recession."[0]
"The President doesn't have much control over the debt added during his first year in office. That's because the budget for that fiscal year was already set by the previous President."[1]
"The President doesn't have much control over the debt added during his first year in office. That's because the budget for that fiscal year was already set by the previous President."[1]
[0] http://politicsthatwork.com/graphs/debt-gdp-president [1] http://useconomy.about.com/od/usdebtanddeficit/p/US-Debt-by-...