The problem though is that personal savings grows over time -- a nation full of young people with high incomes will eventually become a nation full of weathly o

The problem though is that personal savings grows over time -- a nation full of young people with high incomes will eventually become a nation full of weathly old people, but if you were to compare the two nations, the yard stick matters. edit: if you want to cook up some evidence, look at a scatter plot of some indicator of age (national average age?) vs national average wealth. I suspect, given the countries at the top of the list, you'll end up with a pretty good r.