Take note of what exactly? That less people are asking questions about VS2012, now that VS2015 and VS2017 are out? Also, amount of questions is not necessarily

Take note of what exactly? That less people are asking questions about VS2012, now that VS2015 and VS2017 are out? Also, amount of questions is not necessarily a good way of measuring a languages popularity. If a language is easy to use, it could have a large following, but not many questions. Hard to draw meaningful conclusions from the data posted imo. If you are talking about Sharepoint specifically, then you should mention that in your post. Microsoft has a lot of products, just because one is losing popularity doesn't mean they have lost their focus.