81% (2004)

74% (2009)

66% (2006)

78% (2015)

74% (1991)

56% (2001)

77% (1991)

60% (1987)

65% (1984)

79% (2013)

68% (2004)

79% (1994)

76% (2010)

66% (1999)

65% (2002)

60% (2003)

55% (2023)

83% (1994)

77% (1996)

76% (1989)