Year	1 or less	1 to 1.5	Over 1.5
1911	64,919	49,019	60,212
1931	103,791	52,063	49,719
1951	143,096	47,463	26,360
1961	175,172	34,847	11,920
1971	194,323	24,620	6,121
1981	204,813	15,947	2,115
1991	211,019	7,502	880
2001	210,719	4,432	774
2011	224,268	4,531	740

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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