74% (1970)

63% (1962)

64% (1966)

62% (1964)

75% (1963)

59% (1965)

74% (1970)

73% (1987)

57% (1969)

61% (1964)

67% (1987)

62% (1966)

77% (1967)

55% (1985)

53% (1977)

57% (1965)

50% (1965)

55% (1966)

71% (1970)

40% (1984)