Nobody can confirm that. The big increase was only in December of last year so, it doesn't happen every year. There's no sign for increase as it was the year before, no possibility for increase.
do not think negatively first, because the world of trade is very fast changing, the potential to rise will always be there, even if the scale will not be the same, but at least expect that change is needed, because the price of the bitcoin currency is strongly influenced by the sentiments of players who buy and sell and the big owner of bitcoin, so prices will be greatly influenced by us.