True, they've been like that since 2011(the 8th). This result sure gives a lot of ideas for the fandom.

I'll do the commentaries later after I'm done with other things.

They've also been sliding one position per year, and there's another little pattern in that. One time it was Youmu, she jumped from right underneath to between (separating them), and then the next year jumped above pushing them down. Koishi followed the same path, one year behind... directly underneath, between, above. Okuu didn't follow, though... she dropped back, and newcomer Kokoro filled the between space instead.