analytics.usa.gov: The Only Supported Version of Windows (This Past Week) is Only Used by About 13.9% of People in the US, the Home Base of Windows
Even Vista 7 is still used more:
Vista 11 is the only version of Windows that's still supported. And yet, data from the US government suggests that only about 1 in 7 people use it. What does that say about the popularity of Windows? Take a moment to think about it.
Also see: analytics.usa.gov Says Less Than 14% of Web Requests (to Government Sites) Come From Vista 11 █