Last useless statistics, then I promise to stop.
So tonight, number of releases (major + minor + bugfixes) per year.
The blue average line tells us that there are more than 1.5 releases per year.
The green trend line tells us that we will have less than 1 release in 2018.
I'm afraid green trend line is not that wrong (even a bit optimistic).
All the previous statistics were based on the version history that you can find here:
I just added the v3.1.1 of 2017 to complete the results.