World Bank published latest commodity prices: May 2013
In April of 2013, the US dollar price of energy commodities dropped by 2.9%, while the US dollar price of non-energy commodities fell by 3.1%. Food prices are down by 3.7%, beverages increased by 1.1%, raw materials declined by 1.5%, metals dropped by 4.2% while precious metals plunged by 7.7%.
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Indices of Nominal US$ Prices, Percent Changes (April 2013 to March 2012)