The typical lifespan of a $1 bill is just 18 months. While the lifespan of a $100 bill is close to 9 years. And you thought dogs aged fast!

Here is a total breakdown:

$1 bill: 18 months $5 bill: 2 years $10 bill: 3 years $20 bill: 4 years $50 bill: 9 years $100 bill: 9 years Coins: 30 years