I have a 92 Rockhopper Sport that came with Suntour components. And a 95 which has Shimano Alivio, Parallax hubs, and a 1-1/8" head tube/fork/stem.
I guesstimate it's 93-94 due to the 1" front end, Biopace and other Shimano gear and the traditional front hubshell.
edit:
Try starting a search here:
http://www.bikepedia.com/QuickBike/B...pper&Type=bike