Graph here The rate of growth is going down as you have noted but it is still positive and that means it's still exponential. It does look like the growth rate is tending towards zero. I suspect this is because in the higher income countries it's simply too expensive to raise kids as opposed to the return they bring to their parents.
95 posted on 05/02/2016 9:56:00 AM PDT by Nateman
(If liberals are not screaming you are doing it wrong!)