Please provide a link(s) to a source or sources reflecting that "simple fact."
The most recent statistics I could find:
Approximately 203,900 children were abducted in 1999 by family members.
Approximately 58,200 non-family abductions occurred in 1999.
Non-family abductors are as likely to be known by the family as to be strangers.
Only 115 of these abductions were the most serious type involving a child taken by a stranger and kept for ransom, held overnight, or killed.
http://www.family.org/cforum/fosi/pornography/facts/a0026315.cfm