85% (2000)

83% (2009)

74% (2007)

81% (2002)

79% (2013)

70% (2010)

71% (2013)

78% (2011)

66% (2009)

64% (2010)

65% (2010)

72% (2002)

69% (2014)

70% (2007)

72% (2010)

78% (2007)

68% (2000)

70% (2011)

68% (2005)

68% (1998)