From what I remember, we have robots from 1996 to 2015 (some given to mentors). Our 1997 robot is in display at FIRST headquarters. We used our 2006 robot for demos up until 2013, we retired it due to it literally falling apart. Most of our robots still have electronics, including 2003, 2006, 2009, and 2011 (we are going to try and revive 2003). We are currently in a tough position, after losing all of our space in Motorola, we are able to store our old robots in an empty warehouse owned by one of our sponsors. Currently, our 2012, 2013, and 2014 (2012 is missing cRIO and 2013/2014 are RTR) are inside of our sipping crate, yes, a shipping crate, along with all of our other tools and possessions. We are running out of space, sharing a small wood shop with our local high school district's learning center doesn't allow us to keep anything bigger than a battery box and our mechanical/electrical tool chests inside the shop (let's just say it is quite a struggle to build a robot when you have to build out of a jam-packed crate).
http://imgur.com/NLZNSmN
http://imgur.com/9ll4k4o
http://imgur.com/HxL4xLU
(Person for scale)