Adoption level will definitely grow in coming years, as we are already experiencing it at a moment as users have increased in compare to last year we can expect same from next year too.
We can't see some proofs that bitcoin is gaining in large numbers every year. This is only our instinct and we have reason to believe as I believe too that adoption is increasing even at a little numbers. There are lots of demands in the market today but I believe old users just increase their hold coins and no unique users are added. Maybe for a small percentage. No way a newcomer will put quickly his money to buy some bitcoins at the current rate.