Suppose that the U.S. Department of Agriculture (USDA) administers the price floor for cheese, set at $0.17 per pound of cheese. (In real life the actual price floor was officially set at $16.10 per hundredweight of cheese. One hundredweight is 100 pounds.) At that price, according to data from the USDA, the quantity of cheese produced in 2009 by U.S. producers was 212.5 billion pounds, and the quantity demanded was 211 billion pounds. To support the price of cheese at the price floor, the USDA had to buy up 1.5 billion pounds of cheese. The accompanying diagram shows supply and demand curves illustrating the market for cheese.