We are down to 10% or fewer, based on sales. Other clues are found in the message forae - FS9 forae can go for days with no one starting a new topic or responding to an existing one. We've entered the death spiral of fewer users and fewer products as a result. I maintain FS9, FSX, and soon a copy of P3D V4 because I do testing and support for one of the few vendors that still supports all three. Otherwise, I'd probably begin the shift to FSX simply because of product availability.
DJ