To solve this question we have to make deduct these 2 years. 2101 minus 1981 will give the answer.
You are 120 years old.
(1440 months are passed.)
From 1981 to 2101 there are 120 years. If you want to learn your age in 2101 (born in 1981) your age is 120.
Let's see what will be your age if you born +1 or -1 from that date.