With an annual growth rate of 1.4%, Namibia’s population will actually shrink from 2.08 million in 2010, to an estimated 1.9 million in 2040.

With an annual growth rate of 1.88%, Cameroon’s population will grow from 19 million in 2010, to an estimated 31 million in 2040.

With an annual growth rate of 3.39%, Niger’s population will grow from 14 million in 2010, to an estimated 29 million in 2040.

With an annual growth rate of 1.35%, Cape Verde’s population will rise from 580,000 in 2010, to an estimated 704,000 in 2040.

With an annual growth rate of 2.24%, Nigeria’s population will grow from 145 million in 2010, to an estimated 288 million in 2040.