To solve this question we have to make deduct these 2 years. 2114 minus 1974 will give the answer.
You are 140 years old.
(1680 months are passed.)
From 1974 to 2114 there are 140 years. If you want to learn your age in 2114 (born in 1974) your age is 140.
Let's see what will be your age if you born +1 or -1 from that date.