what I question is whether the pattern will return and continue to recur in the current year and the next few years?
Bitcoin's one of the commodities consumed by most users, and it can happen depending on the abilities of the users themselves, in addressing the financial problems facing especially in the face of big days, such as New year, Religion and Culture. For those with limited funds, they may sell their bitcoin even though the bitcoin price is in decline.
By existence that assumption I am very sure if the bitcoin price will go up and down repeatedly.