More caution with statistics...

Based on the per capita debt and annual per capital income, here's how long it would take to repay all of the debt if all income were used to retire debt:

Greece 6.6 years
Italy 6.4 years
Ireland 5.2 years
Portugal 4.4 years
France 4.3 years
United States 3.7 years
Spain 2.8 years