Japan Sales week 22, May 27 - Jun 02 2019, Famitsu

[sethnintendo]

RolStoppable said:
Switch this year: 33,154
Switch last year: 36,271

Nothing out of the ordinary.

Should be peak year either this year or next year in Japan.  I'll probably go with next year considering AC and mainline Pokemon are releasing towards the end of the year.