I think bitcoin hit 40k$ on July after launching bitcoin futures. But we can also see a price +- $8000. Looking forward to high pumps of altcoins as well. 
In my opinion bitcoin will be hard to grow as strong as 2017 because it is so popular, so it will be hard to push prices up as fast as in the past. Because capital inflows are so large that it is difficult for speculators to determine the price of bitcoin. Should invest some of your capital into bitcoin this year.