Welp, I regretfully found the evidence I was looking for.
http://www.smogon.com/stats/Pick a time stamp. It's shows month by month statistics for every tier, OU included.
Time Stamp, OU, and you can even select between different pools of rankings.
Each one proves...I was wrong. But I'm self satisfied that I did find it. Even when it shows I'm a big fat dunce.
It may take a few Ctr-F's and clicks and back tracking to dig through, but the proof that I am wrong is there.
I respectfully admit defeat.
ggwp.