Having decided to abolish money altogether between 1975 and 1980 when the Khmer Rouge took over, Cambodia afterwards reintroduced the riel. Coins worth 50, 100, 200 and 500 riel are in circulation but are rarely used. The notes begin with a 50 which is also not often seen, the 100 much more popular. Notes worth 1000, 2000 and 5000 riel are the most commonly used but there are 50,000 and even 100,000-riel notes. Expect to use US dollars and even Thai baht much more regularly.