64% (2010)

79% (2013)

79% (2006)

74% (2010)

73% (2009)

63% (2008)

56% (2007)

65% (2008)

67% (2013)

70% (2009)

73% (2009)

63% (2008)

58% (2008)

59% (2012)

73% (2012)

68% (2011)

77% (2007)

72% (2011)

65% (2010)

76% (2007)