79% (1964)

69% (2010)

82% (2004)

84% (2004)

77% (2008)

86% (2013)

83% (1997)

78% (2006)

79% (1963)

77% (2015)

85% (2018)

84% (1993)

83% (2005)

77% (1987)

83% (2001)

86% (2011)

85% (2011)

82% (1998)

81% (2016)

75% (2015)