I was going off this chart. Looking more closely, somewhat less than half but close https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/World_Gold_Produc

I was going off this chart. Looking more closely, somewhat less than half but close https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/World_Gold_Production_1900-2014.png/800px-World_Gold_Production_1900-2014.png https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Wo... However, your first source indicates a drop substantially less than half, so perhaps the chart I looked at is not correct? For the price I was looking at an inflation adjusted chart. In constant dollars the price seems to have stayed the same. Typing this out I now realized this must have been the gold standard and my comment was completely incorrect on this point re: gold. The price fell in real terms as it was pegged. https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Gold-nominal-constant-usd.svg/800px-Gold-nominal-constant-usd.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Go...