Although I don't have the exact numbers, I can tell you that I've seen a bunch of Hebrew, non-Jewish-related questions that have been closed for said reason. Hebrew is an open proposal on Area 51, and so, if you'd like to have a place to post Hebrew-related questions, I'd like to direct everyone to Hebrew Language. The proposal has been restarted, so let's see if we can get enough support over there to get the site up and running. There is also the Aramaic Language proposal, that we can also send some support over to.
Indeed, it would be great if a Hebrew Stack Exchange community could be created. Note that Mi Yodeya already promotes this Area 51 proposal via a "community promotion ad".