83% (2005)

69% (2001)

82% (2000)

66% (2001)

66% (1998)

73% (1995)

77% (1999)

69% (1996)

77% (2003)

82% (2001)

80% (2000)

81% (1997)

100% (1998)

78% (1997)

78% (2003)

82% (1998)

75% (2001)

79% (2000)

64% (1996)

73% (1997)