Silver usage per annum:
Industrial 430 million ounces
Photography 145 million ounces
Jewelry and silverware markets 225 million ounces
Silver purchases by investors 80 million ounces
Coins and metals 40 million ounces
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Total silver market demand 920 million ounces

Mine production 650 million ounces
Scrap 20 million ounces
Governments liquidating stockpiles? 10 million ounces
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Total supply 680 million ounces
Supply to Market difference -240 million ounces/year

Stockpiles of metal +500-750 million ounces
Hence 3 years to complete run out of stockpiles?

Considerations due to changing situation:
Rising price means more consumption is recovered as 'scrap'(Silverware sold and melted).Exploration & mining is accelerating due to higher price? (Time lag).
Government liquidation is limited and of short duration?
All of these are small in quantity or long in time so provide a tiny delay to the inevitable.
The action will start well before the stockpiles disappear.