2012
snsd only had TTS (8th @144k) no other release by a gg until 2021 tara and fx 76k ish.
by 2013 its all done EXO breaks a million with xoxo 400k+ with a christmas album SNSD makes a mark but that albums had 10 versions.
by 2014 market is totally turned next girl is fx and tts again at 82+
xoxo was over 100k again
2015 Exo are kings Bts is rising Snsd is still holding its own with 2nd gen acts. but they are 13th.
2016
Twice replaces SNSD as the only GG (maybe this should crystallize why my gens are more correct the do beat similar age groups)
2017 now brand new groups are crushing the girls and twice and snsd are the only girls in the teens Taeyeon at 22 and then RV in the high 30's (90k)
2018 now newer boy groups matching twices monster frequency are crushing them let alone eh older groups