HUSQVARNA RIDING MOWER

I have a Husqvarna riding mower that looks like new. I am trying to figure out what year it is. the model number is LTH18542B. serial number 031304C 001304
does anyone have a clue? I can't find it on the internet about the year it is only where to get parts.

thanks,
tom

HUSQVARNA RIDING MOWER