The dwelling population is the number of existing dwellings. A dwelling is defined as one or more rooms that has been built or rebuilt for the purpose of being used as an all-year dwelling for one or more persons. It must be possible to have access to the room(s) without having to go through another dwelling. Both dwelling units and single rooms are counted as dwellings. A dwelling unit is a conventional dwelling with at least one room and kitchen. Single rooms are living quarters with a separate entrance and with access to water and toilet outside other living quarters.