Africans will make up 40% of the world by 2099 ,United Nations Predicts

        

Africans will account for 40% of world population growth by 2050 and above this is according to UN Prediction.

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Africa is the fastest-growing major area More than half of global population growth between now and 2050 is expected to occur in Africa. Africa has the highest rate of population growth among major areas, growing at a pace of 2.55 per cent annually in 2010-2015 (figure 3). Consequently, of the additional 2.4 billion people projected to be added to the global population between 2015 and 2050, 1.3 billion will be added in Africa. Asia is projected to be the second largest contributor to future global population growth, adding 0.9 billion people between 2015 and 2050, followed by Northern America, Latin America and the Caribbean and Oceania, which are projected to have much smaller increments. In the medium variant, Europe is projected to have a smaller population in 2050 than in 2015

A rapid population increase in Africa is anticipated even if there is a substantial reduction of fertility levels in the near future. The medium variant projection assumes that fertility will fall from 4.7 children per women in 2010-2015 to 3.1 in 2045-2050, reaching 2.2 by 2095-2100. After 2050, Africa is expected to be the only major area still experiencing substantial population growth. As a result, Africa’s share of global population is projected to grow to 25 per cent in 2050 and 39 per cent by 2100, while the share residing in Asia will fall to 54 per cent in 2050 and 44 per cent in 2100. Regardless of the uncertainty surrounding future trends in fertility in Africa, the large number of young people currently on the  continent who will reach adulthood in the coming years and have children of their own, ensures that the region will play a central role in shaping the size and distribution of the world’s population over the coming decades.

Population growth remains especially high in the group of 48 countries designated by the United Nations as the least developed countries (LDCs), of which 27 are in Africa. Although the growth rate of the LDCs is projected to slow from its current 2.4 per cent annually, the population of this group is projected to double in size from 954 million inhabitants in 2015 to 1.9 billion in 2050 and further increase to 3.2 billion in 2100. Between 2015 and 2100, the populations of 33 countries, most of them LDCs, have a high probability of at least tripling. Among them, the populations of Angola, Burundi, Democratic Republic of Congo, Malawi, Mali, Niger, Somalia, Uganda, United Republic of Tanzania and Zambia are projected to increase at least five-fold by 2100. The concentration of population growth in the poorest countries will make it harder for those governments to eradicate poverty and inequality, combat hunger and malnutrition, expand education enrolment and health systems, improve the provision of basic services and implement other elements of a sustainable development agenda to ensure that no-one is left behind

United Nations Department of Economic and Social Affairs/Population Division 3 World Population Prospects: The 2015 Revision, Key Findings and Advance Tables