86% (2001)

85% (2004)

75% (2023)

81% (1988)

84% (1997)

78% (1989)

78% (2008)

80% (1986)

77% (2010)

80% (1995)

65% (1994)

72% (2002)

78% (1992)

78% (2013)

79% (2014)

73% (2004)

74% (1991)

72% (1994)

66% (2006)

81% (2013)