Here is a very credible source for information on contraceptive use in the US. You will find these numbers quoted often. However, I think it is important to note that they are referencing specifically, teens FIRST sexual experience, not their birth control of choice when in a relationship, consistently and over time. For more on that read this article from Cosmopolitan.
WHO NEEDS CONTRACEPTIVES?
There are 61 million U.S. women of reproductive age (15–44).1 About 43 million of them (70%) are at risk of unintended pregnancy—that is, they are sexually active and do not want to become pregnant, but could become pregnant if they and their partners fail to use a contraceptive method correctly and consistently.CLICK HERE to continue reading this article...