UN Commodity Trade Statistics Database (Comtrade) This link opens in a new windowAnnual compilation of trade statistics from over 130 countries, detailed by commodity and partner country. The data are processed into a standard format with consistent coding and valuation. All values are converted into U.S. dollars using exchange rates supplied by the countries, or derived from monthly market rates and volume of trade. For many countries, the data coverage starts as far back as 1962 and goes up to the most recent completed year. [N.B.: GU only has access to the "free" version of Comtrade; we are not premium subscribers.]