From this article:
The National Review Board, recruiting a research team from the John Jay College of Criminal Justice, released its initial report in 2004. The results were conclusive: This was not a "pedophile" scandal, but a homosexual scandal. Eighty percent of the alleged victims were...
Most of these abuse cases occurred decades before. The 2004 report covered these decades.
That's where the statistics about the homosexual nature of most cases was uncovered.
In recent years there has been very little abuse.