81% (1984)

78% (1987)

64% (2002)

68% (1991)

75% (1999)

69% (1993)

72% (1977)

59% (2000)

64% (2000)

73% (1995)

72% (1994)

74% (2011)

63% (2005)

70% (1985)

53% (1997)

68% (2001)

65% (1982)

70% (2023)

64% (2001)

63% (2001)