Your failure rates are dandy. Now stop to think that a 1% failure rate still means a whole lot of pregnancies in a large population? Also, your 1% number assumes perfectly compliant patients; which most people, especially kids, aren't. Pushing contraception on people also results in a lot more illicit sex, which results in a lot more contraceptive failures, which results in a lot more abortions.
Planned Parenthood isn't stupid. They make their money -- a lot of money -- off abortion. They also push contraception on kids. Why? Because they know very well that one leads to the other.
Without contraceptive use, there is about an 85% pregnancy rate per year. With contraceptive use, there is less than a 1% pregnancy rate per year. That is a HUGE difference.
Do you seriously think that married couples are going to wait until they decide to have children before becoming intimate? And that, once they have all the children they want, they will stop intimate activity?
The fact is that the abortion industry survives because of the minority of women who choose not to use contraceptives at all. The women who use contraceptives deprive the abortion industry of profit. That's why abortion sales representatives do everything they can to discourage the use of contraceptives (even while putting on a facade of encouraging their use).