53% (1986)

37% (1983)

51% (1988)

56% (1979)

72% (1983)

67% (1977)

52% (1980)

65% (1989)

52% (1982)

76% (1982)

62% (1985)

42% (1994)

58% (1978)

44% (1981)

0% (1986)

0% (1981)

54% (1977)

64% (1990)

0% (1987)

0% (1983)