64% (1981)

37% (1984)

55% (1979)

64% (1981)

50% (1971)

67% (1983)

53% (1980)

0% (1967)

68% (1968)

100% (1983)

55% (1984)

0% (1969)

50% (1971)

72% (1982)

63% (1985)

50% (1970)

50% (1980)

22% (1984)

70% (1976)

43% (1978)