BABY BOOMS AND BUSTS
The world population is currently at 7.6 billion. The growth or decline of a nation's population is due to multiple factors. Fertility rates, life expectancy, standard of living, socio-economic developments, marriage ages, and the availability and affordability of medicine and health care all play a part. Here, we take a look at the 15 countries with the fastest-growing populations and the 15 countries where populations were shrinking the fastest between 2017 and 2018 and the likely causes behind their growth or decline, according to data from World Population Review and other sources.The fastest-growing countries are listed first, followed by the fastest-shrinking nations.