First published by Money Metals here: https://www.moneymetals.com/news/2017/02/01/silver-supply-reliance-001001

The U.S. silver supply will likely be in jeopardy in the future when the highly inflated paper markets finally crack. This is not a matter of if, but WHEN. If we consider the top two precious metals and copper, silver has the highest net import reliance as a percentage of domestic consumption.