[kozziollek]

Cool! That date axis though...

PHP's 3 years 2011-2014 are much shorter than 2 years 2014-2016. NodeJS's years 2017-2020 that were ~50% longer than 2013-2017.

[yiyus]

I guess that each data point is a commit and they just made more commits in the 2014-2016 period than in 2011-2014. But it's just a guess.