84% (1989)

82% (1992)

71% (1993)

73% (1994)

72% (1998)

50% (1989)

68% (1996)

75% (1999)

82% (1994)

73% (1995)

100% (1995)

0% (1986)

72% (1998)

68% (1997)

70% (2001)

83% (2001)

69% (1989)

77% (1994)

57% (1999)

70% (1997)