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Population Figure 12.11 shows population projections for Sierra Leone for 2010–50. In the high variant the 2010 population will double soon after 2040. In the medium variant the population will double just before 2050, whereas in the low variant the population will be only 77 percent greater in 2050 than it was in 2010. Higher population growth can adversely affect resources.
Income Figure 12.12 presents three overall scenarios for Sierra Leone’s GDP per capita derived by combining three GDP scenarios with the three population scenar- ios of Figure 12.11 (based on United Nations population data). The optimistic scenario combines high GDP with low population scenarios for all countries, the baseline scenario combines the medium GDP projection with the medium population scenario, and the pessimistic scenario combines the low GDP sce- nario with the high population scenario. The agricultural modeling in the next section uses these scenarios as well.