Haven't read the responses yet. Answering the original question cold.
YES, the problem is HUGE. The fact that offenders are NOT reported and often NOT punished in any way at all means they MUST have a higher percentage than in groups that DO report and DO punish pedophiles.
This is common sense. The organization has a failed mechanism for dealing with the problem so of course the problem is HUGE.
(when I have time I'll read through the thread and no doubt discover extremists who say there isn't a problem in the Borg any worse than anywhere else and other extremists who say the Borg is 95% pedophile and 5% kids.)