Abortion statistics: United States Data and Trends

There are two basic sources on abortion incidence in the United States:

The U.S. Centers for Disease Control (CDC) publishes yearly, but relies on voluntary reports from state health departments (and New York City, Washington, DC) It has been missing data from California, New Hampshire, and at least one other state since 1998.

The Guttmacher Institute (GI) contacts abortion clinics directly for data but does not survey every year.