How do you expect it will help ?
The first interview you do, they will ask for your certificate and they will see you have falsified the data and throw you out division .
You first 2012 experience of 1.5 years. it is non-IT experience.
Even if you wear to change the year 2013, you would still be considered for sure because your experience is non-IT. So how exactly would it help to falsify your pass out year ?