To solve this question we have to make deduct these 2 years. 2100 minus 1984 will give the answer.
You are 116 years old.
(1392 months are passed.)
From 1984 to 2100 there are 116 years. If you want to learn your age in 2100 (born in 1984) your age is 116.
Let's see what will be your age if you born +1 or -1 from that date.