85% (2010)

87% (2010)

66% (2013)

85% (2011)

85% (2008)

79% (2012)

82% (2005)

75% (1998)

71% (1997)

77% (1996)

73% (2014)

84% (2010)

80% (2001)

72% (2001)

84% (2013)

77% (2015)

82% (1999)

79% (2014)

78% (2004)

71% (2015)