70% (1978)

70% (1977)

53% (1987)

20% (1978)

55% (1987)

0% (1974)

0% (1979)

0% (1978)

65% (1977)

0% (1979)

37% (1989)

76% (1972)

52% (1986)

43% (1978)

50% (1986)

72% (1976)

74% (1982)

63% (1984)

0% (1982)

46% (1982)