34% (1979)

52% (1980)

70% (1974)

66% (1981)

62% (1984)

68% (1975)

71% (1983)

54% (1985)

0% (1978)

45% (1980)

48% (1977)

30% (1980)

100% (1984)

60% (1984)

80% (1979)

40% (1986)

57% (1979)

0% (1983)

0% (1975)

0% (1982)