To solve this question we have to make deduct these 2 years. 2100 minus 1964 will give the answer.
You are 136 years old.
(1632 months are passed.)
From 1964 to 2100 there are 136 years. If you want to learn your age in 2100 (born in 1964) your age is 136.
Let's see what will be your age if you born +1 or -1 from that date.