I am not aware of anything covering the more recent boats, but the data on the older boats is available.
Around ten years ago the data was on the then forum, and I copied that into a spreadsheet, and during my days on Committee I periodically updated it from the regular statistics of new registrations, but that as some time ago so it is now no longer up to date. This can be found on the GP14 Owners Online Community site.
It would be well worth updating it to the latest boats, and then keeping it up to date, and publishing it on the main Association website.
Oliver