>If the birth rate remains at 2.1 you can have as many miscarriages as you want, and the population will still increase.
2.1 children per woman is the REPLACEMENT rate, meaning this is what it would take for the population size to remain roughly the same. One kid to replace her, one kid to replace a random dude (not necessarily the father!), and .1 kids to make up for the kids that die before they reach adulthood.
This does not mean that every woman needs to have children. it means that the total number of children divided by the total amount of women needs to be 2.1 for the population to remain stable
2.1 children per woman is the REPLACEMENT rate, meaning this is what it would take for the population size to remain roughly the same. One kid to replace her, one kid to replace a random dude (not necessarily the father!), and .1 kids to make up for the kids that die before they reach adulthood.
This does not mean that every woman needs to have children. it means that the total number of children divided by the total amount of women needs to be 2.1 for the population to remain stable