US births hit a 30-year low
saw the greatest year-toyear drop — about 92,000 less than the previous year.
That was surprising, because baby booms often parallel economic booms, and last year was a period of low unemployment and a growing economy.
But other factors are likely at play, experts said.
One may be shifting attitudes about motherhood among millennials, who are in their prime child-bearing years right now. They may be more inclined to put off child-bearing or have fewer children, researchers said.
Another may be changes in the immigrant population, who generate nearly a quarter of the babies born in the U.S. each year. For example, Asians are making up a larger proportion of immigrants, and they have typically had fewer children than other immigrant groups.
Also, use of IUDs and other long- acting forms of contraception has been increasing.
The Centers for Disease Control and Prevention report also found:
The rate of births to women ages 15 to 44, known as the general fertility rate, sank to a record low of about 60 per 1,000. Women in their early 40s were the only group with higher birth rates in 2017, up 2 percent from the year before. The rate has been rising since the early 1980s.