85% (2000)

83% (2009)

81% (2002)

75% (2007)

79% (2013)

70% (2010)

78% (2011)

68% (1998)

67% (2000)

76% (2007)

73% (2002)

69% (2007)

73% (2010)

72% (2013)

70% (2000)

69% (2014)

68% (2006)

70% (2005)

64% (2010)

68% (2005)