But that was not what ended the abuse. I did your homework for you and sadly the Catholic church has been discriminating against its own members. Sadly the study that they paid for told them that they were going after the wrong people:
Weeding Out Gays from Seminaries
Second is the notion that the sexual abuse crisis was primarily a question of gays in the priesthood. For one thing, the conflation of homosexuality with pedophilia has been disproven by almost every psychiatrist and psychologist.
The studies are too numerous to mention. It was rebutted even by the
U.S. bishops own study. ("At this point, we do not find a connection between homosexual identity and the increased likelihood of subsequent abuse from the data that we have right now," said Margaret Smith of the John Jay College of Criminal Justice.)
For another, the increasing number of gay priests entering ministry in the past few years, which critics point to as a stain on the priesthood, coincides with a diminution of sexual abuse cases in recent years. For another, the reason that you don’t see any public models of healthy, mature, celibate gay priests to counteract the stereotype of the pedophile gay priest, is that they are forbidden to speak out publicly. Or they are simply afraid.
<bolding mine>
In other words the Catholic's church's "cure" cannot work. The number is down probably more due to policing and the fact that the church is no longer a haven to child abusers.