60% (1989)

56% (1986)

56% (1992)

50% (1993)

64% (1988)

40% (1996)

53% (1997)

90% (1994)

100% (1993)

43% (1994)

50% (1988)

50% (1990)

60% (1987)

87% (1991)

56% (1998)

47% (1984)

69% (1993)

0% (1989)

60% (1988)

0% (1997)