1. 

Table 1. Population estimates (1950-2005) and projections (2005-2050), by region. Adapted from United Nations (2007). population (billions) % increase 1950 2005 1950 2005 2050 2005 2050 Africa 0.22 0.92 2.00 311 117 Sub-Saharan 0.18 0.77 1.76 327 129 Asia 1,41 3.94 5.27 179 34 Latin America 0.17 0.56 0.77 233 38 Europe 0.55 0.73 0.66 33 -9 Northern 0.17 0.33 0.45 94 34 America