82% (2013)

81% (2013)

78% (2014)

76% (2007)

73% (2009)

78% (2006)

78% (2012)

71% (2011)

80% (2010)

79% (2009)

74% (2008)

72% (2016)

75% (2009)

60% (2006)

72% (2011)

72% (2005)

77% (2007)

74% (2004)

81% (2002)

75% (2016)