The rest of temporary immigrants (55 400) are workers and their families. We will use household size of 2 to be on safe side. It is very likely that workers who arrived with families live in larger households. It is also likely that some of the single workers share dwelling with other single persons. They created demand for 27 700 dwellings.
Natural population increase
Household size change can be calculated using the closest two census data with assumption that change during short period between two censuses is linear.