This seems like a good statistic to have: it shows how much someone does several important moderation duties.
Also, the elections page shows how many flags that user made, but that's not the whole story.
It would be good information to have.
However, it's not currently public information (you can see close voter names after a question has been closed, but the actual votes are private). Also, so far as I can tell we've only tracked this information for a bit less than a year (prior to that, close votes were hard deleted) so the most useful statistic (success rate for close/re-open) could only be accurate for the past 10 months.
I don't think we can in good conscience reveal raw vote numbers, but if individual nominees want to post this, they're free to do so.