My two cents (or pennies):
I keep statistics of a Part 91 Citation Bravo in the company I fly, the boss like hard numbers and, closing the first semester of 2010 these is the data I have gathered:
AVERAGE TRIP TIME: 1.05 HOURS
AVERAGE FUEL BURN: 1268 PPH
AVERAGE FUEL BURN: 189.4 GPH
AVERAGE STAGE LENGTH: 335.0 NM
AVERAGE AIRSPEED (TAS): 319 KTS
TOTAL FLIGHTS GENERATED: 39 FLIGHTS
TOTAL PASSENGERS FLOWN: 373 PAX
TOTAL LEGS FLOWN: 131 SECTORS
AVERAGE OCCUPANCY: 2.85 PASSENGERS PER SECTOR
OCCUPANCY PER SECTOR: 40.7 %
PASSENGER MILES: 117 NAUTICAL MILES PER PASSENGER/SECTOR
DISPATCH RELIABILITY: 98.7 %
These are real time numbers, that defines our specific operation, but it should be more or less representative of a light jet flown in corporate operations.
Hope it helps.