The Bank's food price index has shot up by 15% in the last four months alone.

仅在去年的四个月内，世行国际食品价格指数就上涨15%。

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This is most visible in the spiralling cost of food: the Economist's commodity food-price index jumped by more than 6% in January.

这在急剧上涨的食品费用上变现最为明显：《经济学人》的商品食品价格指数1月跃升超过6%。

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Below is the monthly chart of the food price index (based on IMF data) going back 10 years.

FORBES: Grains Over Gold

According to Moody's, the average increase in the World Bank's commodity food price index for emerging countries was 3% year-over-year in the past 12 months, when India's index of wholesale food prices rose 10%.

WSJ: Moody's Says India's Food Inflation Credit Negative

The Food and Agriculture Organization (FAO) of the United Nations reported that their food price index averaged 232 points in April, flat from March and 2.6% below its all-time high February level of 237.2.

FORBES: Global Food Price Stable In April Despite Supply Fears