by 2017 is the time for bitcoin to undergo significant changes. if we know the bitcoin price on this day I reach the highest point. it's because of the large number of bitcoin demand this year. more and more bitcoin demand is in line with the growing popularity of bitcoin. if you look at bitcoin price from year to year then you can see the price change very quickly. This is one reason bitcoin is becoming very popular. a lot of people take advantage of the price of the bitcoin increase.