regions-number north america-1,011,000 western europe-988,000 australia-pacifica-22,000 latin america-1,599,000 sub-saharan africa-20,778,000 caribbean-536,000 eastern europe-2,000 southeast mediterranean-893,000 northeast asia-6,000 southeast asia-11,277,000 total-37,112,000 `` what 's the data source ? ''