Source: US. Bureau of Labor Statistics
Release: Consumer Price Index
US. Bureau of Labor Statistics, Consumer Price Index for All Urban Consumers: Food away from home in Midwest - Size Class D (under 50,000 persons) [CUUSD200SEFV], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CUUSD200SEFV, July 30, 2016.