So in another 30 years or so the deficit might be below zero. How about a bit of growth above 0.3%?
Of course the bloated fat elephant (not trees) in the room is the trillions in tax havens around the globe. Enough to remove the national debt of all nations I'd imagine. But that wouldn't do now would it.
http://www.taxjustice.net/topics/more/size-of-the-problem/