PostgreSQL contributor Tomas Vondra has published a blog
post looking at development activity in the project, with data from the late
1990s to today.

We're doing ~50 commits per week, give or take. In ~2010 we were doing maybe
25/week, and the trend seems to be a slow and consistent growth. The monthly
average makes the trend a bit easier to spot. Which is good, although there's a
lot of other important details (size of commits, are they new features or fixes,
...).

It however nicely aligns with the number of active committers, which also
grew ~2x between 2010 and today. So maybe that's working as expected.

https://lwn.net/Articles/1094470/
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