Anyone have the stats on the distribution of children per woman? And does it vary by country? For instance, in a country with a TFR of 1.0 (say South Korea), is that generally each woman has one child? Or is it the case that about half the women have 2 children, and about half has no children? Seems like that could have societal implications if your society was essentially raised as only-children, vs having siblings growing up. Maybe someone has studied this in relation to China's One-Child policy? Also it seems like if you had the case where half of the women were having two children, you'd be on a glide path to something sustainable long term.