83% (2006)

83% (1989)

79% (1993)

72% (2009)

76% (2006)

65% (2005)

75% (1990)

69% (1998)

71% (1997)

65% (2014)

74% (2002)

70% (2001)

71% (1997)

68% (1997)

76% (1988)

72% (2000)

62% (2011)

77% (2002)

65% (2000)

73% (1999)