Here's the email I got back from Ducati.
Pretty low number on the R (glad I own one)
thanks for contacting us and sorry for the delay in answering you.
Referring to your request we list here below the 999R production data:
999R MY06 - no. 190
999R XEROX MY06 - no. 324
We hope we have been useful to you.
Kind regards,
FRANCESCA SOLA
Customer Service
Ducati Motor Holding Spa
Borgo Panigale - Italy
www.ducati.com