PS4 Hardware Sales 2015 vs 2016 vs 2017: New Years numbers posted. 2017 ends at 20.2 million

[PAOerfulone]

New Years numbers have been added and the brings 2017 to its end total of 20.2 million.

When the first numbers of 2018 are added, I will be starting a brand new thread specifically comparing 2017 and 2018, to determine which year will be the peak year.

I would like to ask the mods to lock this thread once that time comes and 2018's first hardware numbers are posted, until then, I ask that this thread remain open.