The chart shows the annual rate of global population growth according to historical estimates and projections from the UN World Population Prospects.
The growth rate peaked in 1963 at over 2% per year, and since then, it has more than halved, falling to less than 1% by 2020.
The UN demographers expect rates to continue falling until the end of the century, eventually leading to negative growth rates and a shrinking global population.
Source: Our World in Data.

And certainly won’t improve when you have hungry children waiting for you while you are working 2 jobs.
Before you could fund your entire household with 1 income and the result was a population boom and the decline started when the standard of life started declining.