Food prices, as measured by the Consumer Price Index (CPI), increased 2.9 percent in 1991, half the 1990 price increase of 5.8 percent. Higher charges for processing and distribution mainly accounted for the price increase. The farm-to-retail price spread of USDA's market basket of foods rose 6.7 percent, partly reflecting higher prices of inputs, such as labor and energy, that the food industry used. The prices farmers received for commodities, as measured by the farm value of USDA's market basket of foods, declined 6.2 percent. The farm value share of the food dollar spent in grocery stores in 1991 was 27 percent, down from 30 percent in 1990.