Not of which I am aware, though I fully agree that knowing that information would be marvellous.  After Tpt's post last week about the tool (another forum) I ran some stats for English Wikisource for some amazing numbers  [[s:en:WS :S]].

We neither pay sufficient attention to or suitably emphasise the tool and it's power is both hidden and probably uncounted by WMF, so good numbers would be magic. Numbers per work would be brilliant. Queriable numbers per work that we could use to demonstrate the versatility of our site and our output would be...  (magically brilliant???)

regards, Billinghurst