To solve this question we have to make deduct these 2 years. 2099 minus 1970 will give the answer.
You are 129 years old.
(1548 months are passed.)
From 1970 to 2099 there are 129 years. If you want to learn your age in 2099 (born in 1970) your age is 129.
Let's see what will be your age if you born +1 or -1 from that date.