Ten years of historical price, production/consumption and trade data for over 100 commodities.
The United States Department of Agriculture through its Foreign Agricultural Service (FAS) and Economic Research Service (ERS) collects the official U.S. govenment statistics on international agricultural trade and provides research on agricultural commodities.
The United Nations Food and Agriculture Organization (FAO) collects the most comprehensive data on the trade of over 600 food and agricultural commodities.