83% (2006)

75% (1990)

76% (2006)

69% (1998)

79% (1993)

72% (2009)

69% (2001)

72% (2000)

71% (1997)

75% (1988)

69% (2006)

74% (2000)

77% (2002)

65% (2014)

74% (2002)

69% (1992)

68% (1997)

64% (2002)

71% (1997)

69% (2006)