To solve this question we have to make deduct these 2 years. 2104 minus 1991 will give the answer.
You are 113 years old.
(1356 months are passed.)
From 1991 to 2104 there are 113 years. If you want to learn your age in 2104 (born in 1991) your age is 113.
Let's see what will be your age if you born +1 or -1 from that date.