It won’t make another doubling, but even without it, the whole planet is vastly overpopulated anyway and in my opinion- completely fucked.
Now mainly Africa is churning out brownies at four to five per female on average, down from seven or so, which is pushing numbers higher the most. All developed countries are below replacement rate and have been topping up their numbers with migrants. People do live longer in richer countries and getting more decrepit as many push well beyond seventy five or eighty, but that doesn’t make much difference long term.
Majority of population growth since the fifties/sixties or so is down to Middle East, Asia, South America and Africa. Hence the growth in numbers and collective “IQ”.