Mellotronists

Just out of curiosity, and because I got Samagaio's tron book today, and there are a 
lot of pictures of trons owned by people on this group, and knowing that we sort of 
covered this before, does anyone know what percentage of Mellotrons are accounted 
for?  I mean, it seems like a lot of people who have one are pretty serious about them, 
and they only made, in total, what, a few thousand?  That's really not that many, 
considering the number of people who would potentially be interested in owning one.