85% (1966)

85% (1975)

86% (1957)

69% (1995)

80% (1963)

71% (1983)

63% (1999)

64% (1997)

65% (2001)

74% (1964)

68% (1999)

73% (1976)

66% (1987)

76% (1962)

72% (1977)

69% (1977)

76% (1960)

78% (1977)

70% (1962)

71% (1963)