This report presents detailed pregnancy rates for 1990-2008, updating a national series of rates extending since 1976.Tabular and graphical data on pregnancy rates by age, race, and Hispanic origin, and by marital status are presented and described.In 2008, an estimated 6,578,000 pregnancies resulted in 4,248,000 live births, 1,212,000 induced abortions, and 1,118,000 fetal losses. The 2008 pregnancy rate of 105.5 pregnancies per 1000 women aged 15-44 is 9 percent below the 1990 peak of 115.8. The teen pregnancy rate dropped 40 percent from 1990 to 2008, reaching a historic low of 69.8 per 1000 women aged 15-19. Pregnancy rates have declined significantly for non-Hispanic white, non-Hispanic black, and Hispanic teenagers. Rates in 2008 for non-Hispanic black and Hispanic teenagers were two to three times higher than the rates for non-Hispanic white teenagers. Pregnancy rates for women in their early 20s declined to the lowest level in more than three decades, although the declines have been more modest than for teenagers. Pregnancy rates for women aged 25-29 have changed relatively little since 1990, while rates for women in their 30s and early 40s increased.