> You don't need to know the bottom left axis number.

We very much do. The graph suggests an insane growth in PRs from almost zero to 90M. Now compare this misleading graph with this much clearer one, which shows that the growth over the last three years has been less than 80%: https://github.blog/wp-content/uploads/2025/10/octoverse-202...

That link shows the number of PRs created to be less than 10M though.