If used perfectly
If used perfectly (every act of intercourse, no condoms
breaking or slipped off, used correctly as described here: http://www.
Wikihow.Com/use-a-condom) e by 100 couples, 2/100 will get pregnant over the course of 1 year. In typical use (which likely includes some times when condoms aren't used), 28/100 couples will get pregnant.