To solve this question we have to make deduct these 2 years. 2100 minus 1983 will give the answer.
You are 117 years old.
(1404 months are passed.)
From 1983 to 2100 there are 117 years. If you want to learn your age in 2100 (born in 1983) your age is 117.
Let's see what will be your age if you born +1 or -1 from that date.