That piece from Rush is spectacular. I've captured what you posted and am going to commit the numbers to memory. I'm also going to search for the original source material (hopefully at Brookings Institute) and save the link. If I find it, or if someone beats me to it, I want to see that it's posted here for reference.
Great find.
It's from Rush's website. Posted on the home page Right side column. I think they have a live link in the text to the Brookings docs