[doyoulikeworms]

Actually, thanks for prompting me to check on that stat. It came from here: http://kff.org/other/state-indicator/health-spending-per-cap...

And in returning to it, I realized that it's from 2009!

That said, it seems like it's simply total health care spending divided by population per state. But I'm not sure. Either way, it's pretty outdated.