Thank you very much!
Cagey, of interest!
It's funny you should ping me to this story again. The other day I had lunch with a customer and this very subject came up. He's very familiar to this concept and the money that it generates. Isn't it always about money? Our money.
Let me point you to the extensive US census data he has compiled. At Demographia, in the lefthand menu under Nations, click United States.