"That is not the fault of the Church"
Well, we do all have free will. I contend, however, that by declaring something dogma ex cathedra which the people haven't accepted, this is an unfortunate result of a theological/ecclesiological mistake.
"Is it? What is the abortion rate among Catholics?"
If one includes Hispanic women, 33% higher than among Protestant women. Looked at another way, the rate of abortion among Catholic women of all ethnicities in the US is 5.1 per 1000 pregnancies.
By the way, I have been a member of my state's Right to Life organization for many, many years.