65% (1973)

58% (1985)

67% (1977)

57% (1988)

80% (1989)

0% (1987)

63% (2002)

0% (1976)

62% (1989)

55% (1986)

63% (1992)

0% (1973)

0% (1981)

72% (1992)

0% (1992)

47% (1993)

35% (1994)

64% (1989)

58% (1993)

63% (1971)