People need to get jiggy with it, or whatever

I saw this old reference to the population in 1950- 150 million Americans in 1950. I figured it must be at least triple that now… But no! Even with immigration, 2021 census says 331.9 – That’s more than double, sure… But it took over 70 years to do it. Who is going to take care of me in my old age? Oh wait… I’m already old.