The UN expects global population to hit 8 billion on Nov. 15 and grow to 8.5 billion by 2030. More than half the projected rise between now and 2050 is expected to be in just eight countries: Congo, Egypt, Ethiopia, India, Nigeria, Pakistan, the Philippines and Tanzania, according to a report titled World Population Prospects 2022.

China is expected to experience an absolute decline in its population as early as next year, the report said. A Chinese official had earlier this year estimated that the country’s population may peak as early as 2022 as its population of 1.41 billion grew at the slowest pace since the 1950s, according to government data. An earlier report projected India surpassing China by 2027.

Lower mortality rates and demographic changes may ensure that central and southern Asia become the world’s most-populous region by 2037. Numbers in sub-Saharan Africa may almost double by late 2040s to cross 2 billion. Population growth rates in Europe and Northern America were almost zero in 2020 and 2021, data show.