The vehicle identification number is the unique identifier. Your vehicle identification number can be found on the inside cover of your Service & Warranty manual. If not evident there, it can be found on the lower left hand side of your windscreen.
The VIN is made up of 17 characters (alpha & numeric) and the 10th character determines the model year of your vehicle.
The example below, character "C" determines the model year, in this case 2012.
K N A J P 1 A 5 9 C 1 T 9 8 0 7 6