 A unique form of circulating specie is the fuel ration coupon, which has been issued in 2005, 2006, 2007 and 2008.Known denominations include 1, 5, 10, 20, 25, & 50 litres of petrol (gasoline), kerosene and/or diesel, and translate roughly into the local petrol price (about 1 UK pound sterling per litre or US$1.50 in late 2008).Businesses, including Western Union, have been reported paying employees with these coupons, and even auctions have been transacted in this currency.