You cant call that a bubble because a real bubble means it pump and it dump down to zero or in short it has exited unto scam . but in the case of crypto . the year 2017 is only a normal year where crypto shows a sign of recovery and it continue until the coins reach their new ath's  .

Now after it .  the next years were kinda bit frustrated because the movements of the coins are pretty confusing .  one time they are stable and after the next few days they will drop then the next few weeks they will increase a bit and then drop again .