Comment by cm2187

That's a very interesting plot thank you.

Another very powerful demographic chart that I lost (in case someone knows where it is) is a 3 dimensional chart. Y axis is children per women, X axis is infant mortality, and then there is a slider to look at the evolution through time. All countries are plotted as points.

The reason it is powerful is because by moving the slider you can see the evolution through time. For most now developed countries, infant mortality and children per women both reduced simultaneously as the progress of medicine and the evolution of society have been very gradual. But african countries are following a different path, where the infant mortality collapsed but is not followed by a reduction of children per woman (only a few countries have started to take that turn). That is basically all you need to know to explain the major demographic shift we are about to observe in Africa.