[TheFuture]

All the African nations have huge birthrates

http://populationpyramid.net/Niger/2020/

10-15yrs from now that is a big workforce.

[smcl]

If you look back at Niger though they've had a similar pyramid for the last 20 years, and it's not helped. Due to famine, illness or whatever there seems to be a fairly high mortality rate which prevents this.