While prices for oil and nat. gas are off again this morning, along with share prices for miners, the industrial demand for silver is expected to rises some 27 percent by 2018, per this report. That's just two years from now. This may be a biased report, but that does not have to mean it's unreliable - do our own DD.
If correct, this should mean about 13.5 percent annualized increased industrial demand, not including what may come from the added pressures stemming from the developing "Currency Wars" (i.e., investment demand).
http://www.kitco.com/news/2014-12-11/Industrial-Demand-For-Silver-To-Grow-By-27-pct-By-2018-Silver-Institute.html
VP