Of course,the growth will repeat, but much earlier than December, I think it will happen in September, and by December bitcoin will cost about 50 thousand dollars, my forecasts are based on market dynamics for the period 2016-2018 and indicators of economic involvement in the blockchain over the past year.
I will not deny that I am hoping for the same event to happen. If so it happens, then we might see more price increase by December, hopefully.
And of course models that are based on price dynamics in the past can be a reliable source for say 90-95% of the time, but we can't always be sure of it as we have that gray area of 5-10% though.