70% (1974)

62% (1984)

68% (1975)

71% (1983)

66% (1981)

54% (1985)

57% (1979)

100% (1984)

0% (1982)

45% (1980)

0% (1978)

40% (1986)

34% (1979)

60% (1984)

90% (1973)

30% (1980)

48% (1977)

80% (1979)

0% (1975)

64% (1986)