The data and chart are from the United Nations. Bill Luby adds some detail on the rising prices:
Among the various sub-indices, the most dramatic increase has been seen in sugar, which is up 51% in just four months and is up a staggering 239% over the course of the past two years to a new all-time high. Meat prices are also at new highs, but while the sugar price index currently stands at 398.4, meat has only risen to 142.2. Note that all index values reflect a baseline of 100 that is derived from the 2002-2004 average prices.