It can go either way. Some women are really lucky and have no period for all 5 years. Others like me have the misfortune of still getting a period every 28 days. But at least it's a lot less bleeding than what it was without it.
Anyway, so the answer is that there is no "normal" because it varies from person to person on whether you get a period or not.
I had 2 Mirena IUDs for a total of 9 years. I had a period for a few months with the first one then didn't have a period at all. It's normal to not have a period! Hope that helps. (: