Did I miss Chromebook Sale figures at I/O ?

I watched a greater part of the last weeks Google I/O but the keynote was getting rather boring and I had to attend to do.

Since Chromebook / OS is heralded to be the next great thing since sliced bread, I'm curious to know how good it's performing on the market. Did I by any chance miss it or Google didn't make mention of it at all ? I mean Google waste an effort to talk about android's 1 billion active month users (or Drive's 190 million active monthly users. )