Analyzing abortion data collected between 1974 and 2004 (30-years), Centers for Disease Control and Prevention revealed that overall abortion rates in USA have fallen 33%, with white women less likely to terminate pregnancies over Hispanic or black women.  
There were 20-abortions in 2004 compared to 29-abortions per 1,000 women aged 15 to 44-years in 1980.  Different ethnic groups showed disparity in their abortion ratios, with 1.05% white women aged 15-44-years getting aborted, as compared with 2.8 among Hispanics and 5% amongst blacks.

Women with children showed an increase in abortion rates, from 4.6% in 1976 to 6.0 in 2004, suggesting a trend that having another child is no longer an unaffordable feasibility.

Rachel Jones, a senior research associate at the Guttmacher Institute, a non-profit, non-partisan health research organization and an authority on abortion trends, in the first comprehensive demographic analysis attributes declining abortion rates to greater focus on reducing teenage pregnancy, including increased contraceptives use.

Teenage abortions witnessed the greatest decline, with abortions among women 20-years and younger dropping steadily from 33% in 1974 to 17% in 2004.  For those younger than 18, it fell from 15% in 1974 to 6% in 2004.

While, the analysis shows positive trends, it highlights several issues of concern e.g. fewer abortions, particularly among teens, even as there is a concentration of abortions among women of colour and those with low incomes.

Abortion rates may have declined among all racial and ethnic groups, but widely varying rates reflect disparities in unintended pregnancy, as well as, access to the most effective contraceptive methods.

Dr. Laura Meyers, President and CEO of Planned Parenthood, Metro Washington, sais that the situation is such that for many women, low income means a choosing between putting food on their table or buying birth control.