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["Proportion of UK citizens claiming to be member of the National Trust"]
[]
[null,"BSA 1985","BSA 1986","BSA 1987","BSA 1990","BSA 1998","BSA 2000"]
["Belong to National Trust",5.7799999999999997E-2,7.85E-2,8.6900000000000005E-2,8.8099999999999998E-2,8.7999999999999995E-2,9.3600000000000003E-2]
[]
["Source: British Social Attitudes Survey; Percentages answering yes to the question : Do you personally belong to any of the groups listed on this card? National Trust (data accessed through: www.britsocat.com)"]