What is the disconnect you have here?
You claim that revenues are not part of the problem but then reference a graph that clearly shows the dramatic decrease in revenues in 2008-9. Hello? Is anyone home?
You can see that revenues and spending are now both ticking upward over time at roughly the same pace despite the sluggish growth of the economy. Get the stupid GOP House out of the way with their continual manufactured crises and the economy will take off, then you will see that gap close.