83% (2007)

83% (2013)

79% (2015)

84% (2017)

85% (2018)

79% (2009)

60% (2005)

85% (2011)

82% (2012)

79% (2006)

82% (2012)

82% (2013)

67% (2018)

78% (2016)

73% (2014)

74% (2007)

90% (1997)

69% (2006)

72% (2013)

68% (2009)