To solve this question we have to make deduct these 2 years. 2120 minus 1999 will give the answer.
You are 121 years old.
(1452 months are passed.)
From 1999 to 2120 there are 121 years. If you want to learn your age in 2120 (born in 1999) your age is 121.
Let's see what will be your age if you born +1 or -1 from that date.