This is related to thisTrello card on the Documentation Team Roadmap.
More specifically, each quarter - and then for our annual report - we gather and compile data on code contributions. Here’s the existing Talk thread that gets into the details.
TL: DR: @darius and @irenyak1 have been helping us run scripts and get this data in past years. I’d like to get our current process (and scripts) documented on the WIki for now so we can keep that data current as we take a closer look at suggestions for improving this process.