82% (1979)

83% (1985)

56% (1962)

77% (1925)

78% (1972)

79% (1962)

80% (1975)

80% (1966)

79% (1957)

71% (1970)

79% (1964)

74% (1963)

80% (1959)

74% (1969)

59% (1969)

79% (1983)

74% (1975)

71% (1961)

75% (1965)

63% (1965)