M.O.U.S. certificates - how many people have them?

How many people in the world at the moment have a Microsoft Office User Specialist certificate in Word, Excel, or Access? I can’t find this information on Microsoft’s web sites. What sort of status can the possessors of these certificates expect to have? Is an “expert level” certificate proof of an IQ over 100 for instance? Does passing one of these exams make a person instantly employable?