Two things about this curve. Most of graphs, statistics about the economy we see are all cooked up figures.
1. Do you remember how there were big graphs about booming US economy in 2007-2008? Then suddenly few months later, the Mega banks and fiancial institutions came begging on its knees to US congress to give Trillions of bailout money. Obviously, the earlier figures of booming economy and stock market were all fraudulent.
America is the biggest spender on National defense.
2. How much of the US production in this curve is of Military and defense systems? Because building up Missiles and Machine guns simple does no good to American citizens. Its a wastage of money.