(Undated-AP) Experts say the Elizabeth Smart case is far from the norm. They say the vast majority of children who are taken by strangers are returned home safely and relatively quickly. According to the National Center for Missing and Exploited Children, about 46-hundred children are taken each year by strangers. Most are held only briefly, and then released. The group says there are only about 100 abductions by strangers each year that fit into the more serious category -- in which a child is held for an extended period of time, or is killed. The Elizabeth Smart case was among a series of high-profile abductions last year. But experts say kidnapping by strangers is probably declining.