The U.S. dollar since September 9, 2001, at a conversion rate of 25 thousand sucres per dollar. Circulating bills are denominated in one, two, five, ten, twenty, fifty and one hundred dollars. Coins include 0.01, 0.05, 0.10, 0.25, 0.50 y 1.00. The latter include American coins or their domestic equivalent, which are not valid outside Ecuador.