My quick statistical review yields the following:
For the Australian Branch during the 10-year period of 2005-2014 there was an annual average incident rate of 0.000401 per peak publisher. This amounts to an average annual number of about 0.40 per 1000 peak publishers. There were a total of 257 individual perps reported for this period in the Australian Branch.
Worldwide this extrapolates to:
For the 10-year period of 2005-2014 there is an estimated worldwide number of 28,827 individuals associated with Jehovah's Witnesses that have been reported for sexual molestation of a child.