Missing Peoples Yearly Averages

Does anyone know how many people go missing every year? And of that percent, how many turn back up alive? dead? not at all?

It would be lovely if those of you who do have information upon this subject would link a site with the statistics covering this question...As always, thank you for your time in viewing this thread and your responses.

Try this site. You can look for statistics here and all over the world.

www.nationmaster.com...&int=-1&id=us

Pretty nice link, I very much appreciate your time in researching and posting it.