Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports.
For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Hugo Ahlenius, UNEP/GRID-Arendal)
Food and Agricultural Organization of the United Nations (FAO). 2008. International commodity prices. http://www.fao.org/es/esc/prices (Accessed November 10, 2008) International Monetary Fund (IMF). 2008. IMF Primary Commodity Prices, monthly data (CSV file) for 8 price indices and 49 actual price series, 1980 - current. http://www.imf.org/external/np/res/commod/index.asp (Accessed November 10, 2008)