In the K-pop world, more than half of the album sales in 2017 are those of the five major groups.

* Validated the Gaon chart, announced by Hana financial investment securities analyst.

* Percentage of 56% in large group..

* Below, the 5 major groups

1st place, BTS: 18%

2nd place, EXO: 15%

3rd place, WANNA ONE: 9%

4th place, TWICE: 8%

5th place, GOT7: 6%