It's stabilising. Look at the curve. Increasing wealth in Africa and Asia correlates strongly to a drop in birthrate. The problem isn't unconstrained population growth, it's the energy budget inherent in the population we have already, as standards of living rise worldwide.
30y and we didn't double. We probably won't hit 10b
10b would be just over 25% more people - therefore even if we manage to reduce per-capita environmental impact by 25% (which is evidently no mean feat), we'd still just be treading water.
30y and we didn't double. We probably won't hit 10b