Northern African countries curves seems to be impervious to the final part of the phenomenon, their fertility rates seemingly unable to going under the 2.1 bar

Northern African countries curves seems to be impervious to the final part of the phenomenon, their fertility rates seemingly unable to going under the 2.1 bar and even going the other way. And in the case of Niger, Mali, Nigeria etc, when their TFR would eventually cross the 2.1 limit of demographic transition according to the standard model nearly half the global population would live there at the end of this century. It is insane and completely unsustainable even when not taking climate change and ressources depletion into account