Last year, Americans spent 9.9 percent of their disposable income on food, according to latest estimates from the USDA Economic Research Service. The figure has been below 10 percent for several years now, proving once again that food in this country is a bargain.

To see percentage expenditures since 1929, follow this link.

http://www.ers.usda.gov/Briefing/CPIFoodAndExpenditures/Data/table7.htm

Source: ERS