The latest economic treat, the budget deficit fell to just 4.1% of GDP in 2013, the lowest level since 2008. Revenues were 16.7% of GDP, while expenditures were 20.8%. Rising revenues accounted for 79% of the deficit decline in 2013. The trick will be getting the annual deficit below 2.5% of GDP. As long as it’s above that level, the debt will continue to rise as a percentage of GDP.