As noted,,, Ruger does NOT normally release production numbers.
And the RENE folks (contributors & editor,) have been able to mostly get older production numbers by diligent research, AND the fact that those guns are no longer made, and the serialization process was different back when.
New Models,, and records,, especially the odd stuff,, is guesswork,,,based upon people reporting whatever we can find and discussions with distributors etc.
A good example of mistakes in production information.
For many years,, the number of factory verifiable brass framed .44 mags was thought to be low & made any "lettered" gun valuable. Well, research in Rugers actual records by John Dougan, uncovered old records,, with information on many more of them. It changed the value of that model quite a bit.
So, as noted, above,, you may never get actual production numbers,, unless Ruger changes how they release their information. And we don't see that happening anytime soon.
THAT"S why you didn't get any responses to your earlier question.