83% (2005)

79% (1996)

78% (2003)

73% (1998)

81% (1993)

71% (2002)

81% (1997)

82% (2001)

79% (2000)

77% (1996)

60% (2002)

82% (1998)

68% (1996)

67% (1996)

82% (2000)

79% (1999)

65% (1995)

72% (1994)

60% (2002)

80% (1997)