For the second year in a row, the number of babies delivered in the U.S. fell in 2016, according to a new report from the National Center for Health Statistics. For some groups of women, the birth rate reached record lows.
The provisional figures released Friday include 99.96% of all births in the United States last year. Here's what they show:
Overall births
The total number of babies born in the U.S. last year was 3,941,109. That's 37,388 fewer babies than were born in the U.S. in 2015, which represents a 1% decline.
The number of births tends to rise as the population rises, so statisticians like to make historical comparisons by calculating the general fertility rate. This is the number of births per 1,000 women considered to be of childbearing age (between 15 and 44).
In 2016, the U.S. general fertility rate hit a record low of 62.0 births per 1,000 women ages 15 to 44. In 2015, the general fertility rate was 62.5.
Another useful statistic is the total fertility rate. This is an estimate of the total number of babies that 1,000 women would have over their lifetimes, based on the actual birth rates for women in different age groups.
In 2016, the total fertility rate for American women was 1,818 births per 1,000 women. That's the lowest it has been since 1984.
In order for a generation to exactly replace itself, the total fertility rate needs to be 2,100 births per 1,000 women. The U.S. has been missing that mark since 1971 (though the country's population has grown due to immigration).