Bullrun will is coming now, look BTC grow again at keep growing until now.
But if you min a boom moment like 2017, i think the answer is in 2021.
2021 Bitcoin will hit at least 50.000 $, let's wait and see how it will happen next time.
The bull run of this market is hard to guess due to the fluctuation of cryptocurrency. At the moment, the price of BTC is down at $9400 and ETH still down below $200. So that the bull run in this year will happen at the end of this year when the demand of cryptocurrency is high.