Coin.dance charts the weekly sales of popular Bitcoin exchange LocalBitcoins.com, which specializes in face-to-face Bitcoin sales, as well as online Bitcoin purchases. Their data shows Bitcoin sales are up tremendously in 2015, both worldwide and in most major countries, over the previous two years. For example, global Bitcoin sales over this time last year have more than doubled, as indicated by the chart below.
And this is just the start. We are not even close to mainstream adoption. Just think what that will look like.
Interesting from all those volume charts on their site is the chart for Russia. Showed exceptional growth, and that in the country where they want to throw people in jail for using bitcoin.