This is so interesting: From The CDC: The Teen Pregnancy and Birth Rates
"Teen Pregnancy in the United States. In 2013, a total of 273,105 babies were born to women aged 15–19 years, for a live birth rate of 26.5 per 1,000 women in this age group. This is a record low for U.S. teens in this age group, and a drop of 10% from 2012.May 19, 2015"
And the linked page even includes a graph:
This is a good link too: Trends in Teen Pregnancy and Childbearing
"Between 1990 and 2010 (the most recent year for which data are available), the teen pregnancy rate declined by 51 percent—from 116.9 to 57.4 pregnancies per 1,000 teen girls.[4] According to recent national data, this decline is due to the combination of an increased percentage of adolescents who are waiting to have sexual intercourse and the increased use of contraceptives by teens.[4],[5]"
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