My guess is that this is generally repeated. What this means is that there will be proportionally a lot more rolling year periods showing a gain than comparatively one month rolling periods.
Putting what you see in directly in front of you within the proper context of the bigger picture is always a wise idea. Unfortunately "guessing" means nothing in the investment world. Your guess, my guess, Fundstrat's guess...it's all worth the paper it's printed on, and that's it.
While YOY gains from 2017 are wonderful, past performance isn't an indicator of future results. The rising support indicator is a better, fact based, metric that indicates we're oversold right now, implying we should see another growth run. But getting the price of bitcoin out of it's 2018 cycle will take more than technical analytics...it'll require a real growth in use and adoption.
How do we get that?