79% (2006)

74% (2010)

64% (2010)

80% (2013)

72% (2011)

76% (2007)

69% (2012)

58% (2011)

68% (2011)

77% (2007)

67% (2013)

56% (2007)

61% (2011)

73% (2009)

63% (2008)

66% (2008)

74% (2012)

64% (2008)

58% (2008)

70% (2009)