To solve this question we have to make deduct these 2 years. 2103 minus 1977 will give the answer.
You are 126 years old.
(1512 months are passed.)
From 1977 to 2103 there are 126 years. If you want to learn your age in 2103 (born in 1977) your age is 126.
Let's see what will be your age if you born +1 or -1 from that date.