0% (1971)

10% (1984)

10% (1978)

47% (1978)

59% (1971)

10% (1982)

0% (1988)

58% (1971)

0% (1977)

42% (1981)

0% (1971)

52% (1970)

80% (1971)

50% (1985)

0% (1987)

40% (1978)

0% (1987)

43% (1979)

50% (1978)

0% (1979)