Does the model year thing roll on each year? Mine was registered Oct 04 and the VIN decoder which produce a data card show an option code of 805, the 5 meaning it's model year 2005 - it's a facelift model, which were built from July 04. Maybe it would stay as model year 05 until they made a change and perhaps in 2002 those changes weren't frequent.
When I worked for Saab, their model year always changed during the factory shut down, which was in July - so model year 2004 would run from August 2003 till June 2004, and model year 2005 from August 2004 to June 2005.