To solve this question we have to make deduct these 2 years. 2109 minus 1977 will give the answer.
You are 132 years old.
(1584 months are passed.)
From 1977 to 2109 there are 132 years. If you want to learn your age in 2109 (born in 1977) your age is 132.
Let's see what will be your age if you born +1 or -1 from that date.