Science, Maths & Technology
Diagrams, charts and graphs
...changed over a period of nearly 30 years. NUMBER OF PEOPLE IN HOUSEHOLD 1961 (%) 1971 (%) 1981 (%) 1991 (%) 1 14 18 22 27 2 30 32 32 34 3 23 19 17 16 4 18 17 18 16 5 9 8 7 5 6 or more 7 6 4 2 Number of households surveyed/millions 16.3 18.6 20.2 22.4 Average household size (number of people) 3.1 2.9 2.7 2.5 (Office for National Statistics, Social Trends 29, 1999, Crown...