Update, 23:00: I've managed to upload every set of minutes that I have in my files that is readable (sometimes only as a PDF because I haven't converted all of them to HTML). I also added entries for every meeting back to July 2001 even if we don't have minutes for them.
Minutes prior to 2001 do exist in a variety of forms; however, all of them will take work to turn into readable files. For example, many years' minutes from an earlier stint of mine as Secretary were originally composed on the Wang word processing system at my then-job, and they've been converted (badly) to Word. They will need lots of fixing to make usable. It's not a high-priority project.