Getting really old!
Derived from the Age Pickup-Graph, stating the pickup-ratio while aging:
0 - 15 years old: you will pick up any change
15 - 40: you will pick up any dime, but will ignore pennies
40 - 75: you will not pick up any single quarters, but will pick up 2 quarters depending on how far one is from the other
< 90: you will always pick up silver dollars or dollar bills
> 115: you won't even bother to pick up a hundred dollar bill