1. United Nations, Department of Economic
and Social Affairs, Population
Division. In sub-Saharan Africa, for example, 62 per
cent of the population is below age 25 in 2019. World Population Prospects 2019: Highlights. ST/ESA/SER.A/423; 2019.
2. www.worldometers.info/world-population/africa-population/; population.un.org/wpp/
3. www.worldometers.info/world-population/us-population/; population.un.org/wpp/.
4. United
Nations, Department of Economic and Social
Affairs, Population
Division. Sub-Saharan Africa will account for most
of the growth of the world’s population over the coming decades,
while several other regions will begin to experience decreasing population
numbers. World Population Prospects 2019:
Highlights. ST/ESA/SER.A/423; 2019
5. See
DALY
estimates, 2000–2016 by region at www.who.int/healthinfo/global_burden_disease/estimates/en/index1.html.