It's interesting to see the wealth distributions in different countries. A similar evaluation was done here a couple years back, though I have serious doubts about it's accuracy. Mainly because of the massive unemployment and casual labour (without tax declarations) that we've got.

The evaluation basically showed that if a person can afford to own a car, then they're in the top 10% wealthiest people in the country. Owning a house as well put a person into the top 5%. It's scary to think about.

That said, cost of living is much lower here. I find the US to be an extremely expensive place to visit.