Teen pregnancies are at their lowest rate in nearly 40 years, according to the latest data from the Guttmacher Institute, a research organization focused on sexual and reproductive health.

The report shows that about 7 percent of U.S. teen girls between the ages of 15 to 19 were pregnant in 2008 — a decline from the high of more than 11 percent in 1990. Abortions among teen girls fell from a peak of more than 4 percent in 1988 to about 1.8 percent in 2008, the latest year for which data are available.