$ 5 for xrp this year is over optimistic thinking, in my opinion that is very difficult to achieve.
XRP has almost reached its maximum growth rate of $ 3 and with such a large supply, $ 5 is almost impossible to achieve despite the BTC's return to $ 20k later this year.
I expect $ 1.5 ~ $ 2 for the XRP from now until the end of 2019.