Cambodian riel
…also named riel, has been issued since 20 March 1980. Since the late 1990s, the riel has had an unofficial fixed exchange rate of 4,100:1 with the United States dollar, which is also used as a de facto currency for commercial transactions. Its subunits, the kak (1⁄10 riel) and the sen (1⁄100), are no longer in common…