70% (1962)

65% (1961)

80% (1969)

83% (1975)

66% (1974)

71% (1971)

80% (1980)

35% (1968)

78% (1973)

69% (1984)

10% (1971)

64% (1980)

57% (1976)

77% (1977)

86% (1979)

82% (1985)

90% (1962)

77% (1985)

62% (1985)

60% (1984)