Win 7 still miles ahead
Considering the length of time what Windows 8/8.1 has been available the fact that Windows 7 still has such dominance tells us how successful Windows 8 has really been.,
Of course total sales of Windows 8.1 go on rising because most buyers of a new computer get no choice.
It will be interesting to see the stats a few months after Windows 10 gets released. Most did not want Win8 at any price if they had a choice but many might take up the 'free' Win 10 offer if it looks good.