[naasking]

> You can see that the growth is rushing towards zero and almost crosses it in 2100, giving a maximum sometime around 2115.

You're not reading that data correctly, or perhaps, you're simply not accounting for the death rate. The death rate will surpass the growth rate in those projections somewhere between 2050-2080, which means population peak will be in that time frame, not a century from now.

[pierrec]

Hmm, I think you're the one that's not reading it correctly. The growth rate takes into account both death and birth rates. As Balgair points out, it's simply the derivative of the total population. And the UN's projections do not show population peaking between 2050-2080.