65% (2010)

70% (2012)

79% (2006)

63% (2009)

82% (2012)

70% (2004)

69% (2008)

78% (2010)

48% (2009)

68% (2009)

76% (2005)

67% (2010)

77% (2012)

65% (2009)

85% (2006)

67% (2008)

68% (2009)

76% (2011)

73% (2007)

64% (2013)