There are six denominations of Canadian circulation coinage in production: 5¢, 10¢, 25¢, 50¢, $1, and $2. Officially they are each named according to their value (e.g. "10-cent piece"), but in practice only the 50-cent piece is known by that name. The three smallest coins are known by the traditional names "nickel" (5¢), "dime" (10¢), and "quarter" (25¢), and the one-dollar and two-dollar coins are called the "loonie" (for the loon depiction on the reverse) and the "toonie" (a portmanteau of "two" and "loonie") respectively. The production of the Canadian 1-cent piece (known as the "penny") was discontinued in 2012, as inflation had reduced its value significantly below the cost of production.