A World Bank policy research working paper published in July 2008 found that the increase in food commodities prices was led by grains, with sharp price increases in 2005 despite record crops worldwide.
世界银行发表于2008年7月的政策研究工作报告发现，2005年增加的粮食商品价格如谷物等带领价格大幅上涨，尽管在全球范围内有创纪录的作物收获。