71% (2006)

78% (2017)

80% (2010)

80% (2011)

85% (2007)

77% (2005)

80% (2010)

81% (2013)

83% (2011)

68% (2007)

78% (2008)

71% (2015)

78% (2015)

72% (2016)

83% (2014)

79% (2018)

81% (2012)

78% (2015)

78% (2009)

78% (2011)