58% (1971)

62% (1971)

50% (1979)

70% (1976)

48% (1970)

71% (1983)

76% (1985)

63% (1971)

55% (1982)

61% (1968)

54% (1972)

63% (1981)

50% (1980)

100% (1975)

72% (1971)

53% (1971)

62% (1967)

54% (1969)

0% (1970)

45% (1970)