A Call of Duty gamer plays for an average of 170 hours per year

"Even before the launch of Modern Warfare 3, the Call of Duty community is already one of the strongest there is. More than 30 million people have played online this year and 20 million players play each month. On average, the Call of Duty player plays 170 hours of the game per year. That’s as much time spent as watching the full series of the Sopranos and Lost, combined."
Source:  Data from Activision Blizzard, reported by VentureBeat, 8th November 2011