The birth rate of immigrant women of reproductive age dropped from 76 births per 1,000 women in 2013 to 62 births per 1,000 in 2008. By contrast, native-born women’s birth rate dropped from 54 per 1,000 to 50 — a much smaller decline.

Immigrant women still have a higher fertility rate, but their average of 2.22 children expected during their lifetime is well below immigrants’ peak of 2.75 in 2008, said the report, written by Steven A. Camarota and Karen Zeigler for the Center for Immigration Studies. By contrast, the native-born fertility rate was just 1.79 children per woman in 2013, for an average of 1.87 overall.