0% (1971)

68% (1980)

62% (1978)

53% (1981)

65% (1982)

0% (1980)

60% (1979)

50% (1975)

54% (1975)

0% (1982)

10% (1978)

58% (1973)

0% (1983)

50% (1980)

78% (1972)

50% (1977)

0% (1979)

0% (1976)

0% (1977)

45% (1977)