Daily silver and gold/silver ratio since 1968 (the floating of currencies and gold prices). Historically the ratio is supposed to be some unicorn mixture of abundancy ratio and fairy dust. No-one knows for sure, If you read enough history, MASSIVE arbitrage existed in the 15th and 16th century to create wealth by shipping gold/silver backwards and forwards between Asia and Europe. Asia had a very different G/S ratio to Europe - so it was possible to create something from nothing by arbitraging the swaps. Take one to Asia, swap for the other. Rinse and repeat. Hence the era of loading cargo ships with gold or silver depending on the direction of the swap.
What is clear is the G/S ratio is increasing with time since Bretton Woods rev 1.0.
