Also the number of transactions per se is not the best measure of bitcoin's importance; it is the total purchasing power being transferred that should be considered. Bitcoin is a medium of savings that allows people to transfer value easily, from any point on the globe to any other point with minimal fees. The total purchasing power being transferred has growth tremendously because BOTH the number of transactions has grown AND the purchasing power of bitcoin has increased manyfold in the last few years.

This, of course, does not even factor in all the transactions that happen off blockchain.