End of 2014 = 8.8m (3.5m in 2014)
End of 2015 = 12.1m (3.3m in 2015)
End of 2016 = 13.6m (1.5m in 2016)
IN 2016 THE NEW NINTENDO CONSOLE WILL RELEASE
End of 2017 = 14.5 (900k in 2017)
The question now is if Nintendo will still make Wii U's in 2018?
If yes the Wii U could reach 15m! :)
End of 2018 = 15m (500k in 2018)