Replacement fertility rate

The Replacement Fertility Rate is the average number of children a woman needs to have to ensure that a population size remains stable over time, without increasing or decreasing. Typically, this rate is around 2.1 children per woman in developed countries, accounting for factors like mortality rates and those who do not have children. It means that for each generation, enough children are born to replace the parents and maintain the population level. This rate can vary depending on healthcare, survival rates, and social factors, but it generally hovers just above 2 to keep the population steady.