How many victims?

http://transcripts.cnn.com/TRANSCRIPTS/0909/18/lkl.01.html

The other day Larry King was interviewing Dr. Phil and several other people about the Garrido case. And Dr Phil Said "The question on everybody's mind is Philip Garrido involved in some of the other disappearances that we've been talking about tonight. Dan Simon, you've been in Antioch. You've been all over this. Experts that follow these things with pedophiles and sexual offenders tell us that the average sexual offender can have anywhere 100 to 400 victims throughout their lifetime. So the fact that Philip Garrido has been tied to one that we know of and a violent rape before leaves an awful lot of concern that there are other victims out there. What does law enforcement think about this?" Dan Simon was a guest from law enforcement also on the show. Now I have heard others makes similar claims. That one reason we have to be so tough on Sex Offenders is they have so many victims. I haven't come across any studies that have supported this claim. Does anyone reading this know of a study that does support this claim of a high number of victims?
Let's take a minute and look at the numbers. There are over 650,000 registered former offenders. I've heard numbers putting the registry numbers at over 700,000. But for now lets just use the 650,000, figure, if each person on the registry each had 100 victims that would mean there are 65,000,000 victims of sexual abuse. And at 400 each that numbers come out to 260,000,000. Say the words two hundred and sixty MILLION potentional victims of sexual abuse! As of July 2006 the population of the United States is 304,059,724. If the numbers being quoted by the media and politicians are true then almost every person in the United States has been molested by someone already on the registry. And what about the new cases being reported? Over 86% of cases reported are new offenders, people not already on the sex offender registry. Lets look at another fact that is often touted out when you hear these 'experts' talking. Sexual abuse is very under reported. If so how do the numbers add up? On the ARC radio show, with Ron Book as the guest, one caller countered those very myths by saying "If at the rate the media is claiming, children are being victimized. We would be knee high deep in this country, in the bodies of dead & abused children."