The debt data has been collected from Treasury Direct website and adjusted for inflation using the Bureau of Labor Statistics CPI data. For the future debt, I used the debt projection for 2016 from President Obama’s 2013 budget (Historical Tables, Table 7.1 – Federal Debt at the End of the Year).
For the presidents where I had daily debt data (from 1993 – present), I used “inauguration-to-inauguration” debt numbers.
When I didn’t have those (for Ronald Reagan & George H W Bush) I used the yearly debt numbers including the fiscal year for which they were responsible. So for Reagan I used October 1981-October 1989 and for HW Bush I used October 1989 to Jan 20, 1993 (when daily data became available).Continue reading on www.politicalmathblog.com