Last year 2017 the market during december are see the price of the bitcoin become the highest price in the history. I still believe when december 2018 comes the price of the bitcoin will pump again. Maybe the price more than the price of 2017.
But the only who can answer this question is us because we are buyers and the seller and the possible happen to the bitcoin value is depends to us and I will suggest to everyone right now in crypto world if you want to see bitcoin up yoy must buy more bitcoin and hold and don't panic because that is the other reason why the price are decreasing.