84% (2006)

86% (1998)

84% (2015)

68% (2011)

68% (2005)

82% (2002)

73% (2007)

75% (2014)

77% (2017)

64% (2004)

73% (2015)

67% (2000)

72% (2015)

68% (2003)

70% (2013)

54% (2011)

58% (1997)

81% (2002)

82% (2014)

64% (2008)