57% (1989)

64% (1995)

40% (1994)

68% (1997)

72% (1988)

56% (1993)

10% (1988)

55% (1984)

69% (1992)

100% (1993)

50% (1984)

53% (1995)

73% (1986)

0% (1987)

62% (1989)

77% (1988)

50% (1987)

70% (1988)

0% (1988)

40% (1993)