http://www.infoforhealth.org/pr/m13/m13chap1_2.shtml

For most of the past 50 years food production has outpaced rising demand. World population has doubled since World War II, but food production has tripled (22, 47, 83). In the developing world the calories available per person increased from an average of 1,925 calories in 1961 to 2,540 in 1992

World population will grow from around 6 billion people today to 8.3 billion people in 2030. Population growth will be growing at an average of 1.1 percent a year up to 2030, compared to 1.7 percent annually over the past 30 years.
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The world population will be increasingly well-fed by 2030, with 3050 kilocalories (kcal) available per person, compared to 2360 kcal per person per day in the mid-1960s and 2800 kcal today.
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The number of hungry people in developing countries is expected to decline from 777 million today to about 440 million in 2030.