70% (2005)

82% (2004)

72% (2001)

84% (1997)

71% (2011)

81% (1994)

83% (2008)

81% (2008)

62% (2000)

83% (1992)

86% (2011)

56% (2018)

84% (2004)

83% (1997)

78% (2012)

79% (2016)

77% (1987)

74% (1960)

82% (1999)

79% (1999)