Not sure when the recording started but we used to have them burned onto videotape (yes you heard that right) and then ancient format DVD and they were sold at the shows.
By the time we decided to put them online some years were sold out. I have a copy of those that were available at that time.

They are all in formats that I am no longer able to read or convert or had trouble because of the dubbed audio.

So out of those missing from the site, I have 2009, 2010, 2011 & 2012 here on DVD's I can no longer read.
I have 2006 on my hard drive in an 'alien' format.
And I have 2004 on DVD I can't read.

The club had an inventory of some of these I listed above at one point. You could check with Sharona whether we still own any.
Failing that if anyone thinks they can do something with these I could send them to you.