[calcowgirl]

I wonder how 1964 became an established year. Seems like 1958 was the end of the boom, with a few years of flattening before the big decline.

[riverdawg]

The peak birth year (in absolute numbers and rates) in the U.S. was 1957. However, there were more babies born in 1964 than in any year from 1945 through 1953. After 1964, the number of babies born annually fell below 4 million and below 20 per 1000.