In the United States, unadjusted Consumer Price Index for All Urban Consumers is based on the prices of a market basket of: food (14 percent of total weight), energy (9.3 percent), commodities less food and energy commodities (19.4 percent) and services less energy services (57.3 percent). The last category is divided by: shelter (32.1 percent), medical care services (5.8 percent) and transportation services (5.5 percent).