More economy and currency. These are the least valued currencies <a href="http://en.wikipedia.org/wiki/Least_valued_currency_unit" target="_blank">http://en.wikipedia.org/wiki/Least_valued_currency_unit</a> Here is a list of GDP rank. Same as economy rank. <a href="http://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nominal)" target="_blank">http://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nominal)</a> Notice that Indonesia has the 4th most worthless currency, but they have the #20 economy in the world. Vietnam is #2 on worthless currency, but yet #60 economy. Iran is #5 worthless #29 economy Italy which is the #7 economy in the world... before it joined the Euro Italy used the Lira. The Lira exchnage rate was about 1500:1 Size of economy is very related to Money Supply... but it really has nothing to with exchange rate.