When did google start revealing it's adsense share?

I just had to sign up for a new adsense account because my old company took mine (thanks!) and whatever.

So on my new account I saw this:

AdSense for Content: ca-pub-xxxxxxxxxxxx64268 68 % publisher revenue share

Well, what do  you know? Google is not taking 50% or 66% of the revenue, they are sharing 2/3 with me!

Woot!