To solve this question we have to make deduct these 2 years. 2109 minus 1978 will give the answer.
You are 131 years old.
(1572 months are passed.)
From 1978 to 2109 there are 131 years. If you want to learn your age in 2109 (born in 1978) your age is 131.
Let's see what will be your age if you born +1 or -1 from that date.