2017
18 billion --> 618 billion = ~34x
2018
618 billion x 34x = ~21 trillion
Can't happen the growth is too high, despite that though we can still have good gains this year.
Fairly certain that there will be at least 30 cryptocurrencies that will go 34X or more, but yea, not the whole market. Would be happy to see 3X in combined market cap.