The analysis confirmed previous reports that the abortion rate fell to the lowest level since 1974, dropping 33 percent from a peak of 29 abortions per 1,000 women ages 15 to 44 in 1980 to 20 per 1,000 in 2004.
During that period, the proportion of abortions obtained by women younger than 20 dropped steadily, falling from 33 percent in 1974 to 17 percent in 2004. For those younger than 18, it fell from 15 percent of all abortions in 1974 to 6 percent in 2004. At the same time, the proportion of abortions obtained by women in their 20s increased from 50 percent to 57 percent, and the share done for women age 30 and older rose from 18 percent to 27 percent.
Although abortion rates have declined among all racial and ethnic groups, large disparities persist, with Hispanic and black women having the procedure at rates three to five times the rate of white women.
In 2004, there were 10.5 abortions per 1,000 white women ages 15 to 44, compared with 28 per 1,000 Hispanic women of that age and 50 per 1,000 black women. That translates into approximately 1 percent of white women having an abortion in 2004, compared with 3 percent of Hispanic women and 5 percent of black women.