The riel (Khmer: រៀល; sign: ៛; code: KHR) is the currency of Cambodia. There have been two distinct riel, the first issued between 1953 and May 1975. Between 1975 and 1980, the country had no monetary system. A second currency, also named "riel", has been issued since April 1, 1980. However, this currency has never gained much public acceptance, with most Cambodians preferring foreign currency.[1] The UN peacekeeping operation of 1993 injected a large quantity of U.S. dollars into the local economy. As a result, the dollar has become the country's common currency.[1] Riel notes are used for fractional dollar amounts as U.S. coins are not in circulation. The symbol is encoded in Unicode at U+17DB ៛ khmer currency symbol riel (HTML ៛).