64% (2010)

59% (2012)

79% (2006)

74% (2010)

80% (2013)

73% (2009)

73% (2009)

56% (2007)

76% (2007)

61% (2011)

63% (2008)

65% (2010)

66% (2008)

64% (2008)

76% (2007)

69% (2012)

72% (2011)

67% (2013)

67% (2008)

70% (2017)