Iran is being the top country by exchange rate in the world. As of 2015, exchange rate in Iran was 29,011.5 LCU per US$, period average. The top 5 countries also includes Sao Tome and Principe, Viet Nam, Indonesia, and Lao People’s Democratic Republic.
Official exchange rate refers to the exchange rate determined by national authorities or to the rate determined in the legally sanctioned exchange market. It is calculated as an annual average based on monthly averages (local currency units relative to the U.S. dollar).