By your post I am guessing you believe the reversion to a gold standard is a good thing.
By the stats you provide are you suggesting that the US should (even after buying all the gold ever mined) halve its money supply to properly implement a gold standard?
If so, do you think your alternative gold standard universe with its tiny fraction of the current money supply (and the economic growth that came with it) would be a better world to live in?
Cut your standard of living by 1000%, live like that for a week and then get back to me about how enjoyable it is.