80% (1997)

72% (2014)

76% (2009)

82% (1977)

85% (1999)

82% (1979)

77% (2016)

74% (2002)

76% (1987)

70% (2005)

74% (2006)

79% (2014)

74% (2008)

76% (2014)

72% (2013)

62% (2017)

63% (2010)

80% (1986)

68% (2004)

77% (2015)