The Food and Agriculture Organization (FAO) of the United Nations has reported that international prices for key foods have reached their highest levels since December 2014. The vegetable oil price index showed an increase of 14.5 percent, largely due to demand for palm oil and shrinking global inventories. The grain price index strengthened by 2.5 percent since October and 20 percent since November, with wheat and corn prices increasing due to subdued production prospects and lower emissions. The sugar price index rose by 3.3 percent due to a negative global production outlook and expected adverse weather in Europe, Russia, and Thailand. Dairy prices also increased, reaching eighteen-month highs, while meat prices remained below their value from last year. The FAO has reduced its forecast for expected cereal yields but still expects to set a record with 2,742 million tonnes. The report also indicates that 45 countries, including 34 African nations, require external food aid.