Year	1 or less	1 to 1.5	Over 1.5
1911	27,192	11,105	7,065
1931	31,640	7,954	4,266
1951	40,030	6,669	2,821
1961	43,263	5,363	1,626
1971	51,326	3,681	730
1981	57,891	2,290	325
1991	65,384	1,270	232
2001	73,576	1,103	224
2011	83,370	1,348	192

Date:	Source:
1911	1911 Census of England and Wales, Housing, Table 2 , 'Tenements in the Occupation of Private Families. - Classified by Number of Rooms and by Numbers of Occupants, in each Administrative County and in the Aggregates of Urban Districts (exclusive of County Boroughs) and of Rural Districts; also in Urban Districts (other than County Boroughs) and in Rural Districts, 1911'
1931 - 1951	1931 Census of England and Wales, County Report Part I, Table 11 , 'Private Families and Rooms Occupied'
1961	1961 Census of England and Wales, County Report, Table 19 , 'Population in all Private Households by Density of occupation (persons per room)', for 'LAA, Con, NT'
1971	1971 Census of England and Wales, County Report Part II, Table 24 , 'Persons in permanent buildings by density of occupation (persons per room)', for 'AC, CB, Urban areas with populations of 50,000 or more, Aggregates of MB and UD and aggregates of RD, NT and Con Centres. Urban Areas with populations of less than 50,000 and RD'
1981 - 2001	Census of Population
2011	Office for National Statistics, Neighbourhood Statistics (QS409EW)

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