We have some. I wouldn't say it's consistent going back a long time, but we do have some data from 2008-09, which is fairly consistent with this one from 2012. We're going to be collecting some data as well—we're doing it right now—that's going to be similar to this, so we can see if any of this has changed in the coming months as well for this past year.
On May 4th, 2015. See this statement in context.