It seems like that when you’re young time passes too slow and you never get old.
Instead when you’re older it just slips away like sand. You just blink and 5 years are already gone.
I’m not quite sure how it speeds up. I’d say logarithmically if I have to guess, probably you don’t notice it that much when you get really old.
To announce it properly I’d say:
Time gets faster the more you grow older.
I guess somebody should tell this to people when they’re young.