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Linux currently 29.1%
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From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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I'm a Norwegian Linux enthusiast and have never heard anything about the government using Ubuntu or Linux. Seems unlikely, from what I know. I know that within healthcare Windows is still widely used, even on the server side...
On the other hand, a lot of software for official services is being developed as open source now, so that's at least a good step in the right direction. Example: https://github.com/navikt
Norwegian government loves windows, so yea, I really doubt it. (by it, I mean the government using Ubuntu thing)
Source: I used to work for the Norwegian government
edit: added explanation to "it", so not to be as confusing to what I refered to.