What are the typical dimensions of a residential swimming pool?

My above ground pool is 18" wide and 4" deep. Don't know if that's typical though. A: an inground pool would most likely be 15' x 30' x 8' deep - 3.5' in shallow end. Most typical is a kidney shaped in ground pool - 16' X 32' X 8' deep in center - 3.5' shallow ends