It has been more than two years since the first K-Pop Idol Group Infographic. Instead of continuing to name all the groups that have made their debut, this time we focus on the top 25 boy groups and top 25 girl groups.
All information used features the members from within these 50 groups and was finalized on May 1, 2014.
(click image for larger size)

With so many groups out there, it definitely takes a lot of work to break into the top 25, especially if the group isn’t from a huge company.
Male groups seem to be more stable as there were only six members that left their respective groups, compared to 29 female girl group members that have left their respective groups.
In calculating the “songs released per year in Korea” to determine the most and least active groups, OST tracks, CF songs, and sub unit/solo promotions were NOT counted. “Years active” was calculated by the group’s debut date until May 1, 2014. For example, B.A.P would be 827 days, or 2.27 years. With 13 singles released since then, according to their Wikipedia page, 13 divided by 2.27 gives them an average of 5.74 songs a year .
B.A.P has been an very active group since their debut, releasing many songs every year. While it doesn’t seem like it, 2NE1 is the second most active since they release multiple title tracks for each comeback.
While Nine Muses has been said to not have a leader, Sera was mentioned as being the leader on their official Facebook page before.
In case you are wondering, the dates with three idol birthdays are…
Feb 2 – Victoria (f(x)), Hana (Secret), P.O (Block B)
Feb 12 – Dongyun (Boyfriend), Soyu (SISTAR), Subin (Dal Shabet)
March 13 – Eli (U-KISS), Nara (Hello Venus) Myungsoo (Infinite)
May 2- Jinwoon (2AM), Tao (EXO), Sungjae (BTOB), BamBam (GOT7)
May 21 – Sojin (Girl’s Day), Gyuri (Kara), Aron (NU’EST)
June 28 – Seohyun (Girls’ Generation), Minhyuk (CNBLUE), Daehyun (B.A.P)
Aug. 16 – Hoon (U-KISS), RiSe (Ladies’ Code), E-Young (After School), Neil (Teen Top)
Sep. 3 – Hyunseung (BEAST), Sungjong (Infinite), Sojung (Ladies’ Code)
Nov. 6 – G.O (MBLAQ), Kris (EXO), Yura (Girl’s Day)
Dec 12 – Qri (T-ara), Eunjung (T-ara), Seungri (Big Bang)
Dec 14 – Onew (SHINee), B-Bomb (Block B), Yoonjo (Hello Venus)
Source : Soompi
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