Buffet Indicator [QuantNomad]

Created a version of Buffet Indicator for TradingView.
He calls it "the best single measure of where valuations stand at any given moment".
Computations are very simple, it is simply the ratio between total stock market capitalization and US GDP.
I used the S&P 500 capitalization instead of the total so value here might be a bit lower than in the original indicator.
Very high values might mean that we're now in a bubble and correction might follow shortly.