MW2 sold 12m in 2009

Latest Call of Duty dominates 2009 global charts despite mid November release
As part of its all-encompassing detailed report on the global video game market in 2009, GfK-ChartTrack has confirmed that Activision’s Call of Duty: Modern Warfare 2 sold nearly 12m units worldwide last year.
More precisely, the game’s total sales now stand at 11.86m units – or at least, they did come the end of 2009. Total sales could conceivably be far in excess of this by now.
Looking at the sales region-by-region, the USA emerged with the keenest appetite for the shooter, snapping up 8.82m copies. The UK was next up with total sales of 2.8m while Japanese sales hit 238k.
Other star performers on the global stage included Wii Sports Resort (7.57m), New Super Mario Bros (7.41m), Wii Fit Plus (5.80m) and Wii Fit (5.44m).

http://www.mcvuk.com/news/37424/MW2-sold-12m-in-2009