Hey Uncle Paul; the National Debt has gone down since the 60's

So this post is just a personal vendetta for me about a debate I had with my staunchly conservative Uncle. He claims that at no time has the National Debt decreased since the 60's. Unfortunately for my uncle there are multiple ways to look at this issue and I'm embarrassed for him that his judgement is so clouded in partisanship that he is unwilling to accept this reality. Having said that, below is another measure that shows my uncle is wrong. When you adjust for inflation there have been multiple years that the National Debt has gone down. Suck on that you Quilted Northern buying Fundie.