To solve this question we have to make deduct these 2 years. 2100 minus 1973 will give the answer.
You are 127 years old.
(1524 months are passed.)
From 1973 to 2100 there are 127 years. If you want to learn your age in 2100 (born in 1973) your age is 127.
Let's see what will be your age if you born +1 or -1 from that date.