Time to get educated.
2004: TVXQ
2005: TVXQ
2006: TVXQ
2007: TVXQ/Wonder Girls
2008: TVXQ/Wonder Girls
2009: Super Junior/SNSD
2011: Super Junior/SNSD
2012: BigBang/f(x)
2013: EXO/SNSD
2014: EXO/SNSD
2015: BigBang/SNSD
2016: EXO/Twice
2017: EXO/Twice
2018: BTS/Twice
2019: BTS/Twice
2020: BTS/Blackpink
2021: BTS/Blackpink
While I normally love watching Blinks and Once argue it's not needed in this thread. Blackpink did NOT surpass Twice in Korea until last year. Remember Twice was called NATIONS GIRL GROUP. Blackpink has been AMERICAS GIRL GROUP since day 1.