http://world.bymap.org/MedianAge.html
Speaking from the Cathar perspective, and then some.
The poorest outbreed the cockroaches. No wonder the world is so fecked up. Though the richest do the most damage. Well, actually the u.s./israel/u.k./vatican city do the most damage. Might as well all be the same cuntry. Maybe I should throw ksa in thar.