The following information was compiled by Moniquill.
http://www.guttmacher.org/pubs/fb_induced_abortion.html
"On average, women give four reasons for choosing abortion. Three-fourths of women cite concern for or responsibility to other individuals; three-fourths say they cannot afford a child; three-fourths say that having a baby would interfere with work, school or the ability to care for dependents; and half say they do not want to be a single parent or are having problems with their husband or partner."
EDIT: I just want to add my own link since it lays out the information in a relatively user-friendly format - http://www.johnstonsarchive.net/policy/abortion/abreasons.html
