In the year 47,950,306 pieces of software were sold
11,671,685 (24%) of this software was software published by Microsoft
36,278,621 (76%) of this software was published by third parties
This means that (roughly) 4.64 titles were purchased by every XBox 360 owner in 2007
There were 84,353,748 User Owned XBox 360 Months in the Year
XBox 360 owners (on average) buy 0.57 XBox 360 games every month