Today, there are more than 76 million Xbox 360 consoles around the world. That’s three times the number of original Xbox consoles sold. And a Kinect sensor now sits next to roughly one third of those Xbox 360 consoles; the company has sold 24 million Kinect sensors since launch.
Social has been an important part of Xbox from the beginning, and that’s true today more than ever. The Xbox LIVE community has grown to 46 million members, a 15 percent growth since last year.
2012 also marked the Xbox’s biggest year for entertainment and games usage. Users enjoyed more than 18 billion hours of entertainment in 2012, with entertainment app usage growing 57 percent year over year globally. Last year in the United States, Xbox LIVE Gold members averaged 87 hours per month on Xbox, an increase of 10 percent year over year.
http://www.microsoft.com/en-us/news/features/2013/feb13/02-11Xbox.aspx