The Supplemental Nutrition Assistance Program, formerly known as the Food Stamp program, provides food-purchasing assistance for low- and no-income people living in the U.S. It is a federal aid program, administered by the U.S. Department of Agriculture, under the Food and Nutrition Service, though benefits are distributed by each U.S. state's Division of Social Services or Children and Family Services. SNAP benefits cost $76.4 billion in fiscal year 2013 and supplied roughly 47.6 million Americans with an average of $133.08 per month in food assistance. It is the largest nutrition program of the fifteen administered by FNS and is a critical component of the federal social safety net for low-income Americans. The amount of SNAP food stamps a household gets depends on the household's size, income, and expenses. For most of its history, the program used paper-denominated "stamps" or coupons – worth US$1, $5, and $10 – bound into booklets of various denominations, to be torn out individually and used in single-use exchange. Because of their intrinsic value of 1:1 with actual money, the coupons were printed by the US Bureau of Engraving and Printing.