As we can see in BTC chart now, BTC price will reduce in September, in long term 2019 will be the year of Bitcoin as what it happened in late 2017. BTC will rise up to 20k in mid-late 2019.
I think it can easily surpass 20k in 2019. I believe it can reach price level betweetn 40k and 60k until the end of 2019.