

I haven’t read recent research on this, but at least until a decade or so ago, consciously not having children is a very small part of this. It’s more about economic outlooks and the immense pressure of expecting both parents of working full time and raising kids at the same time. Or wanting to have two kids, but putting off the decision so long that the chance of not having successful pregnancies rises a lot.
79 in fact. Pretty low for a country that rich, but to find 69 you have to go to Africa or the poorest Latin or Asian countries.