Wow. According to this blog post by RecordLion, the list of active CRMs is at...923. I can't find any previous numbers but I seem to recall hearing 1100-1200+ a few years ago - maybe around the time I got mine (Oct 2009). The blog post is from April, and these things are always in flux, but still, that seems like a small and dwindling number.
Update: I checked the ICRM membership directory myself and there are 1,179 records in the database. When I filtered for CRM-Retired, I got 206, which leaves 973. Again could be the post was right before a test cycle, but wanted to clarify.