82% (2013)

78% (2012)

81% (2013)

75% (2007)

78% (2014)

74% (2008)

79% (2009)

72% (2016)

78% (2006)

80% (2010)

73% (2009)

75% (2009)

71% (2011)

79% (2013)

60% (2006)

77% (2007)

72% (2005)

61% (2014)

100% (2015)

75% (2011)