Let me up the generality a bit, since "frequency lists of language X" seems to be a common request.
I would be surprised if there weren't frequency lists for many languages. Obviously there are questions (stemmed or not? what does it mean to have a "balanced" corpus from which to derive such lists?), but such lists probably have at least some utility. Is there a place with links to frequency lists of multiple languages?
There are lists of "correctly" spelled words for some languages, which are sometimes grouped into top 10k words, top 20k etc. I suppose one could derive a very coarse-grained ranking from such lists. Obviously these would be inflected words, not stemmed words.
I looked at the ACL wiki (http://aclweb.org/aclwiki/index.php?title=Main_Page), but nothing jumped out at me. So I'll prime the pump with a few links to such lists I did find:
(there's a link to a link to an Arabic list here)
("...send me an email if you're interested in
a particular language and there's plenty of
data I am free to share (frequency lists...")