To solve this question we have to make deduct these 2 years. 2099 minus 1975 will give the answer.
You are 124 years old.
(1488 months are passed.)
From 1975 to 2099 there are 124 years. If you want to learn your age in 2099 (born in 1975) your age is 124.
Let's see what will be your age if you born +1 or -1 from that date.