What year was the Murray Lawn Tractor, model 46379B, manufactured

"lridg45 looks like it has been made before 2001 ""Pre-2001 Murray mowers have five-digit model numbers followed by a dash and a single-digit number. Post-2001 models have a five- or six-digit model number with no dash."" from here

Yours appears to have been manufactured in 1996"

what year was my murray lawn mower made? Model #42817X99B