I bet the first year in prison seems like ten. But the tent year seems like two and the twentieth year seems like just one.
I bet time flies, even when you aren't having fun. Rather, time flies when you are accustomed.
That's actually about what I've heard.
Though, I think it depends on what's going on- upcoming court dates, if awaiting trial. Parole hearings if past trial. Anniversaries. They probably effect it.