Seems that it is time to re-stock 
If we see chart i agree with you, this time to buy bitcoin and hold it, i think this year that chart will repaeted again. so that it gives us profit by buying at the current price. Just suggest for OP maybe update about this, So we can used this thread as a reference.Yes ... it's been 4 years ... it seems that even recently bitcoin was not worth and 1000 dollars. Well, as if in the future to watch the price of bitcoin grows and does it very well even. Most likely sooner or later the cost will be more than 20 thousand ... you just have to wait.
By the way, the price already reached about $19,990 at 17 december 2017