85% (1966)

86% (1957)

83% (1979)

71% (1985)

67% (1988)

71% (1963)

62% (2003)

69% (1982)

65% (2001)

70% (1962)

64% (1997)

76% (1960)

74% (1964)

85% (1975)

66% (1967)

66% (1987)

73% (1979)

65% (1974)

68% (1977)

63% (1999)