That's a 108% increase in a century, which is a relatively short time in historical terms. Imagine the damage to the planet with double the current human population. This could be around the corner, historically speaking.
Not sure you can extrapolate out 100 (or 66) years when there's been a 0.11% (1.19 -> 1.08) change in the growth rate in just the last 5 years.
With modern medicine, modern agriculture and the tendency to reduce warfare around the world, there is no reason to believe the growth will stop, by the contrary.