I'm sure that its just a typo 201
78.
I actually thinking holding bitcoin in 2015 was much more painful than in 2018 since it was much less known and everybody assumed it was a scam.
But the price for the whole year of bitcoin became better at the end of 2015. Starting on January 1,2015 price is $320 and it all ended at $420. And during its movement on November 2015 price goes high nearly to $500.