First published by Money Metals here: https://www.moneymetals.com/news/2017/01/26/historical-gold-value-000996

According to historical official records, the price of gold should be 20 times higher than the current market price. While many precious metals investors have heard about the revaluation of gold to back the outstanding fiat currency, my analysis focuses on monetary gold stocks versus global GDP (Gross Domestic Product).