Good point. For this, I would recommend Purchasing Power Parity. See the map her...

Good point. For this, I would recommend Purchasing Power Parity. See the map here:

http://en.wikipedia.org/wiki/Purchasing_power_parity

The "2003" map may not be the freshest, but it gives a rough estimate. Relative to US:

  * Canada, Australia have 90%
  * Africa typically ranges from 20% to 30%. South africa is much better, often 40%.
  * Most of Asia is 20%, sometimes lower
  * Poland is 50%
  * UK, Germany, France are around 100%
  * Scandinavian countries (Sweden, Norway...) are 120% (!). Japan should be around 120% too.