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                  World Population Prospects, the 2012 Revision

Probabilistic Projections of Total Fertility: Based on WPP2012 fertility estimates
Projections of Total Fertility: Median, 80% / 95% prediction intervals and high / low WPP fertility variant

Explanation: These charts are from the Bayesian Hierarchical Modeling of total fertility that have been carried out with fertility estimates from the 2012 Revision of the World Population Prospects. Please note that only a small selection of the probabilistic trajectories of total fertility is displayed (gray lines) for illustration. The model is using 60,000 trajectories of projected total fertility. The median projection is the solid bold red line, and the 80% and 95% projection intervals are displayed as dashed and dotted red lines respectively. The high-low fertility variants in the 2012 Revision correspond to +/- 0.5 child around the median trajectory displayed as blue dashed lines. The replacement-level of 2.1 children per woman is plotted as green horizontal dashed line only for reference.
 

Source: United Nations, Department of Economic and Social Affairs, Population Division (2013): World Population Prospects: The 2012 Revision. New York

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