To solve this question we have to make deduct these 2 years. 2117 minus 1988 will give the answer.
You are 129 years old.
(1548 months are passed.)
From 1988 to 2117 there are 129 years. If you want to learn your age in 2117 (born in 1988) your age is 129.
Let's see what will be your age if you born +1 or -1 from that date.