Not a direct answer to the question but a good peek into history and population:
By the way the video has a definite Progressive mindset of population control at the end. I do not Stand by that, God Created and said Go Fore and Multiply!
Gen 1:28 (rsv)
“And God blessed them, and God said to them, “Be fruitful and multiply, and fill the earth and subdue it; and have dominion over the fish of the sea and over the birds of the air and over every living thing that moves upon the earth”