70% (2008)

76% (2013)

56% (2014)

79% (2002)

75% (2008)

78% (2002)

78% (2013)

73% (1993)

82% (2006)

76% (2014)

78% (2010)

73% (2007)

76% (2011)

72% (2004)

67% (1987)

78% (2009)

79% (2007)

0% (2001)

77% (2010)

74% (2014)