According to the World Bank, agricultural GDP in sub-Saharan African grew from 2.3 percent per year in the 1980s to 3.8 percent per year from 2000 to 2005—a jump of 65 percent. The most densely populated, western part of the continent has sustained such profound gains in farm output that Steven Wiggins, a leading expert on agriculture, has declared that “a green revolution is already under way.”
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