Interest on the debt as percentage of all other budget expenditures, 2012 - 2024

2012 and 2013 are actual; 2014 on are CBO estimates based on current law.

Source, 2013 actual, and projections:
http://www.cbo.gov/sites/default/files/cbofiles/attachments/45010-Outlook2014_Feb.pdf

Source, 2012 actual:
http://www.cbo.gov/sites/default/files/cbofiles/attachments/44172-Baseline2.pdf