Africa's population is expected to almost quadruple by 2100, from about 1.19 billion in 2015 to 4.39 billion. It will … thus account for 39.12 per cent of the world's population by 2100, against 16.14 per cent in 2015. The continent remains …, compared to around 42 percent globally. While most other regions are experiencing population ageing, Africa is not. Therefore …