Re: The occurrence of bitcoin price movements from year to year
This is the real picture of global bitcoin growth,not the price movement. 
Unfortunately, OP is not here to talk about the global bitcoin growth but instead its growth based on price. Either way, you are right that the volumes itself are the real sign of the increase in bitcoin adoption and not the price.from this data shows that not always the price of bitcoin can be high, there must be a year that makes the price of bitcoin collapse and this year the price movements are almost the same as in 2014-2015 (prices tend to fall).
It is also noticeable that the year 2015-2016 chart is missing but if you look at it on coinmarketcap, one can notice that it was uneventful during that time frame(based on chart). The price goes up and down every now and then but is kept at a certain price range by that time. With that, I think if anyone is to speculate that we will see another repeat of that pattern, then the upcoming year would be the same as the year 2015-2016.