To solve this question we have to make deduct these 2 years. 2109 minus 1971 will give the answer.
You are 138 years old.
(1656 months are passed.)
From 1971 to 2109 there are 138 years. If you want to learn your age in 2109 (born in 1971) your age is 138.
Let's see what will be your age if you born +1 or -1 from that date.