We fingerprinted 250 million code commits across open-source repositories to create the 2022 Developer Report.
3x growth in Bitcoin monthly active developers, from 372 to to 946.

Here's the direct download of the report (PDF):
Electric Capital - Developer Report January - December, 2022 [PDF] https://github.com/electric-capital/developer-reports/raw/master/dev_report_2022.pdf