#soon! Part Un - The 60s-00s Girl Band Debut Breakthrough Rate

Today's fun stuff is a BILLBOARD article that looks at the Greatest Girl Group songs of all time! You'll notice this is not just debuts, but also includes some great numbers in there (despite me disagreeing with a lot of the placements so let's fix some of that on here by voting everyone!). Enjoy!
'I Got a Boy' as the top Girls' Generation song? That's, as they say around these parts, a choice.
How's about this for putting a dent into it?

So far it's looking like this:

60s - 6.9 - 10x2 - 4x2
70s - 5.9 - 10x2 - 4x3
80s - 6.9 - 10x2 - 2x1

Expect the finished product by the end of this week @berserkboi.
When we first started, I thought I was going to be really kind to the sixties songs.
Let's just say I'm not feeling nostalgic. Some of them have not aged well.