78% (2016)

76% (2001)

69% (1998)

70% (2013)

86% (2009)

78% (1994)

85% (2004)

77% (1996)

58% (1985)

77% (1999)

72% (2002)

84% (2004)

82% (2006)

70% (2007)

78% (1994)

76% (2004)

76% (2003)

76% (1994)

60% (2003)

82% (1992)