We do not know for sure, but it is possible that this year may become even better for btc, if the price get higher and stabilize at a better level.
Doubt it, 2017 maybe, but I think it will require a lot more time for btc to get into mainstream and accepted fully as a currency as it is. I'm thinking 2019-2020 to be the best year for bitcoin so far, it may have some falls in prices but I don'treally think that 2017 will change THAT much, maybe the price will go up for 100$ or 150$.