Server Software Usage
Minecraft Versions
About this data
Please don't take these numbers as gospel. bStats pages of plugins that have almost all of their users on modern versions will give you a better picture of concrete percentages, such as Chunky or Multiverse, with Spigot at (less than) 10%.
One weird spike is from bStats breaking, the other two are ???, the month of stale data is a month of me not realizing the cronjob was broken.
Negative numbers come from Paper also reporting numbers without plugins and bStats API being only half useful - but the tendency remains correct.