Not just Americans. First world nations in general. That’s about 20% of the population in there, so the top 5% of US, Europe, Japan, Australia, etc. We’re talking the upper middle class. $100K pre-tax gets you there easily, and thanks to rising prices of housing, I doubt most of them feel very rich at all.

The billionaires are holding big numbers as well, and there’s a few of those dotted around the world, but I’d imagine they’re mostly concentrated in first world countries. If you can live anywhere, why would you live in a craphole?