An index maintained by the International Monetary Fund that tracks prices of internationally traded primary commodities, including industrial metals, foodstuffs, beverages, agricultural raw materials and fuels. It reports benchmark prices that are representative of the global market, determined by the largest exporter of a given commodity. The index is calculated based on prices in 2005 i.e. the average of 2005 prices = 100. Also called IMF Nonfuel Commodity Index.