Is it safe to have an abortion with pills if you've already had one in the past?

Women are fertile for about 40 years. Some women need more than one abortion because for example contraception fails or some women cannot choose when to have sexual relations, or because contraception or information about it is inaccessible. 66
Having a safe abortion, or more than one safe abortion, has lower risk on woman's health or ability to have children in future than having a spontaneaous miscarriage.