83% (2005)

80% (1993)

82% (2011)

85% (2016)

85% (1994)

83% (2009)

81% (2017)

84% (2008)

78% (2014)

75% (2003)

70% (1976)

64% (2014)

83% (2001)

73% (2013)

79% (2000)

80% (2007)

79% (2014)

68% (1957)

72% (2008)

65% (1995)