Year	1 or less	1 to 1.5	Over 1.5
1911	36,538	10,291	6,887
1931	44,530	10,706	7,216
1951	63,950	12,818	6,075
1961	84,816	12,267	5,187
1971	100,204	10,838	3,577
1981	104,960	5,904	1,016
1991	110,580	3,127	745
2001	120,868	2,391	556
2011	131,796	2,385	409

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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