83% (2005)

80% (1993)

82% (2001)

79% (2000)

72% (2008)

82% (1998)

65% (1995)

79% (1999)

82% (1997)

78% (2003)

64% (1998)

79% (1996)

82% (2002)

82% (2000)

74% (1998)

79% (2002)

72% (1994)

71% (2002)

82% (2000)

69% (1999)