Atheists and Agnostics make up 37% of the population and get only 23% of the abortions. Catholics make up 25% of the population and get 31% of the abortions.
Other little interesting tidbits: half of all women will have an unintended pregnancy at some point. 44% of those will have an abortion. All this combined means that there is about a one-third chance that the self-righteous pro-lifer woman you’re talking to has had or will have an abortion by the age of 45.