I see several factors driving the price of silver up in the future. They include:
1) Devaluation of the dollar
2) Increasing national debt destroying confidence in our currency and the federal government
3) Increasing demand for silver in electronics and other products. There will also be a natural increase due to increasing populations and increasing wealth in places like China and India.
4) Increased interest in personal ownership in places like Asia/India
5) While not a technical... psychological fear alone will drive up the price. Our debt, distrust of the federal government and national security threats will drive increasing demand.
Those are the big hitters in my estimnation