The main objective of the decomposition tool is to provide evidence and analysis that countries can use to develop policies and programmes aimed to find a balance between demographic change and social, economic and environmental goals.

This program calculates the contributions of different demographic factors (wanted and un-wanted fertility, mortality, migration, and age structure) to population growth. It is based on the medium variant population projection of the United Nations from 2010 to 2050 for all countries and main regions.

Select a country or region from the window below to view the results of the decomposition tool. Move mouse over the figures to explore the interactive data content. Then read and download a report summarizing the results, methods, and policy implications.


Rwanda: Alternative Population Projections 2000-2050 and Components of Population Growth

1. The Standard  projection includes the contributions of all demographic factors. This is the medium variant projection of the United Nations. It includes the effects of high fertility, mortality and migration as well as momentum.

2. The Replacement  projection is identical to the standard projection but fertility is set to the replacement level from 2010 onward.

3. The Momentum  projection sets fertility to replacement and holds mortality constant and has no migration. it is only affected by the young age structure.

Rwanda: Decline in Population in 2050 Resulting from Removal of Components of Population Growth

© 2013 The Population Council, Inc.