Since you are so interested why don't you do a little research yourself. This has been extensively studied but I think you need to start with the basics. http:

Since you are so interested why don't you do a little research yourself. This has been extensively studied but I think you need to start with the basics. http://en.wikipedia.org/wiki/Purchasing_power_parity http://en.wikipedia.org/wiki/Purchasing_power_parity