That is not an Australian or Catholic problem alone. If you widen 'abuse' to include physical and mental abuse of children rather than just sexual abuse, then I doubt 7% would cover it in terms of Ireland. I had a pint with some of my old school friends and we reckoned about 10% of the priests we dealt with were guilty of sexual abuse, but if you included priests who would cane you repeatedly or verbally humiliate students then you are looking at something like 25-30%. The banning corporal punishment in Ireland some time in the late 1970's/early 1980's was a huge improvement, although the verbals were horrendous in my last couple of years at school.
Bastards the lot of them.