Birth rate
According to the CIA's "The World Factbook", the country with the highest birth rate is Niger at 6.49 children born per woman and the country with the lowest birth rate is Taiwan, at 1.13 children born per woman.
Sub-Saharan Africa
Sub-Saharan African countries top the list of countries and territories by fertility rate with 40 of the highest 50, all with TFR greater than 4 in 2008. All are above the world average except South Africa and Seychelles. More than 40% of the population in sub-Saharan countries is younger than 15 years old, as well as in Sudan, with the exception of South Africa.