Year	1 or less	1 to 1.5	Over 1.5
1911	191,507	83,834	98,288
1931	235,582	75,438	77,281
1951	243,821	62,803	29,631
1961	239,091	50,912	27,537
1971	180,520	30,461	13,025
1981	212,741	25,153	7,653
1991	228,045	14,154	5,570
2001	237,900	11,994	6,128
2011	277,680	17,309	6,659

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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