83% (2005)

82% (1998)

83% (2001)

82% (1997)

78% (2003)

79% (2000)

79% (1996)

74% (1998)

82% (2000)

71% (2002)

68% (1996)

79% (1999)

67% (1996)

71% (1995)

63% (2002)

100% (1998)

79% (2002)

77% (1996)

69% (2001)

66% (2001)