https://en.wikipedia.org/wiki/Sub-replacement_fertility https://en.wikipedia.org/wiki/Sub-replacement_fertility: “The United Nations Population Division define

https://en.wikipedia.org/wiki/Sub-replacement_fertility https://en.wikipedia.org/wiki/Sub-replacement_fertility: “The United Nations Population Division defines sub-replacement fertility as any rate below approximately 2.1 children born per woman of childbearing age, but the threshold can be as high as 3.4 in some developing countries because of higher mortality rates. Taken globally, the total fertility rate at replacement was 2.33 children per woman in 2003. This can be "translated" as 2 children per woman to replace the parents, plus a "third of a child" to make up for the higher probability of males born and mortality prior to the end of a person's fertile life. In 2020, the average global fertility rate was around 2.4 children born per woman.”