60% (1989)

57% (1992)

55% (1986)

64% (1988)

53% (1997)

100% (1993)

50% (1993)

69% (1993)

50% (1990)

57% (1990)

47% (1984)

43% (1994)

60% (1987)

56% (1998)

40% (1996)

50% (1994)

0% (1992)

87% (1991)

50% (1988)

0% (1989)