53% (1986)

58% (1978)

53% (1980)

67% (1977)

65% (1989)

76% (1982)

51% (1988)

38% (1994)

62% (1985)

52% (1982)

54% (1977)

56% (1979)

44% (1981)

37% (1983)

64% (1990)

0% (1983)

0% (1992)

0% (1979)

72% (1983)

0% (1980)