34% (1979)

0% (1983)

52% (1980)

70% (1974)

90% (1973)

66% (1981)

54% (1985)

57% (1979)

62% (1984)

45% (1980)

64% (1986)

68% (1975)

48% (1977)

71% (1983)

50% (1976)

0% (1978)

0% (1982)

40% (1986)

100% (1984)

60% (1974)