What you do not know\or forget about the supply of silver, is that most of the supply comes from secondary mining. It is a by product of copper  lead and zinc and gold. so if the economy does not do well the supply of silver will decrease because the miners for copper and others metals will  decrease their production .

last year the world supply of silver fell 14% when the demand for silver fell 60 mil ounces.  the supply of silver fell at a rate of 3.3 mil oz per month,

their is only about three months supply of silver above ground and the comex has about 159 mill oz of that

the rest is all paper or spoken for. so the price of silver has nowhere to go put up JMHO