The U.S. total fertility rate fell to its lowest-recorded level last year and the number of births was the lowest in 42 years, new federal data published on Wednesday revealed.

According to provisional data of the National Vital Statistics System published by the U.S. Centers for Disease Control (CDC), the total fertility rate in the United States dropped 4% from 2019 to 2020, reaching a record-low. The general fertility rate and overall number of births also declined by 4% last year, with the number of births at its lowest since 1979.

The total fertility rate – an estimate of the number of births that 1,000 women would have in their lifetimes – was only 1,637.5 births per 1,000 women in 2020, well below the “replacement level” rate of 2,100 births per 1,000 women.

W. Brad Wilcox, senior fellow at the Institute for Family Studies, called the report “pretty sobering demographic news.”

He added that “we could be on the cusp of a major demographic shift, or almost like a demographic earthquake here in the United States.”

According to the report, the total fertility rate has been below replacement level “generally” since 1971, and “consistently” since 2007.

There might be a number of causes behind the low birth rates, Wilcox said. While demographers have warned of a possible “baby bust” due to the COVID-19 pandemic and the economic crisis it caused, those numbers would only be revealed in the December statistics at the very end of 2020, he said.

“We would predict that 2021, this year, is going to be even more dramatic” in the declining birth rate, he said, noting that the effects of the COVID-19 pandemic could markedly influence the 2021 birth statistics.

“Delays in marriage” are a large driver of the decline, Wilcox said. The rise of technology impacting social life is another, he said, with fewer people socializing and dating in-person. Adults are also more invested in education and work, he said, and are less likely to view marriage and parenthood as “anchors” of adult life.

Full story at Catholic News Agency.