Among millennials, especially, the fertility rate is very low. Between 2007 and 2012, the birth rate among Americans who came of age after 2000 dropped by 15 percent, to the lowest birth rate ever recorded in the United States: 0.95, less than one baby for every mother. ….. But whatever short-term cause convinced millennial women to put off having children, the long-term impact is profound. Millennial American women have, in the main, opted not to have children in their twenties. This means that these women, when they do have children, will have fewer children than they would have had otherwise, which means the generation produced by the millennials will be smaller than the millennial generation itself.

Bricker, Darrell; Ibbitson, John. Empty Planet (p. 178). Crown. Kindle Edition.