I shoot mostly 35mm, mostly with SLRs, mostly Nikon.
I have 25 Nikon SLRs, but over half of those are back-up/parts cameras, specifically acquired to keep me shooting my favorite models for another 30 years (Lord willing and the creeks don't rise). Of the 12 that I consider 'active' cameras, I use four most often - the FE2, FA, F2, and Nikkormat FT3. They all get well over five rolls a year, with the FE2 taking up about 50% of the total. The other eight Nikons get at least one roll a year run through them, in part for maintenance purposes and in part because I do enjoy using each one.
I have 11 other working film cameras - non-Nikon SLRs, 35mm rangefinders, medium format cameras, etc. - most of which I consider more as "collectibles" than active cameras (several were inherited from family members and have sentimental value, for instance.). Only two from that group meet the five-roll threshold - a Retina IIIc and an Ikonta 521/16.