60% (1989)

56% (1992)

56% (1986)

53% (1997)

64% (1988)

56% (1998)

90% (1994)

47% (1984)

50% (1993)

0% (1987)

50% (1994)

87% (1991)

70% (1995)

68% (1986)

69% (1993)

40% (1996)

50% (1990)

60% (1988)

50% (1988)

0% (1992)