Also, Objective C dropped out in 2016 (replaced by TypeScript).
...I didn't expect PHP on #4 or TypeScript on #7, but it makes sense I guess. Btw, PHP held its #4 steadily since 2015 (and was #3 previously)
JAVA meanwhile has lost its academic connection in a lot of places, and a lot of fresh graduates genuinely don’t want to work with it.
C# is C#, .Net Core is fast and Microsoft are suddenly popular, but they are truly neglecting a lot of their old backend libraries in a typical Microsoft fashion. Which means you have to write a ton of enhancement or replacement libraries, even to work with Microsoft’s own AD.