San Diego Union-Tribune posts and keeps the Dataquick data on it’s site. You can access it here:

http://realestate.signonsandiego.com/area_homesales/index.php

It isn’t very well organized, but you should be able to find what you want going back through 1998

I’m not sure entire SD stats are there, but you can get stats where the county is broken down into five groups.

Hope that helps

XBoxBoy