To solve this question we have to make deduct these 2 years. 2099 minus 1974 will give the answer.
You are 125 years old.
(1500 months are passed.)
From 1974 to 2099 there are 125 years. If you want to learn your age in 2099 (born in 1974) your age is 125.
Let's see what will be your age if you born +1 or -1 from that date.