[Karsus]

Debt level in 1950: $257,357,352,351.04
Debt level in 2000: $5,674,178,209,886.86

That is an increase of 2200% in just 50 years.
Source: http://www.publicdebt.treas.gov/opd/opdhisto4.htm

[DensaMensa]

Normalize the numbers to account for the difference in time, the properly allocate those expenses which are for the war and those which are due to other reasons, then try again.