The annual failure rates of contraceptive methods are shown below. That’s the percentage of people using the method who will get pregnant within one year of using it.
- Combined oral contraceptive pills with typical use is 9%.
- Levonorgestrel IUD 0.2%
- Injectable progestin 6%
- Male condoms 18%
- Female condoms 21%
- Withdrawal method 22%
Contraception Failure Rates: PDF from the CDC
Reference
https://www.cdc.gov/reproductivehealth/contraception/index.htm