58% (1971)

62% (1971)

47% (1974)

50% (1979)

45% (1970)

54% (1972)

55% (1982)

52% (1973)

71% (1983)

50% (1980)

58% (1971)

63% (1971)

56% (1968)

54% (1969)

100% (1975)

70% (1976)

53% (1971)

76% (1985)

60% (1978)

66% (1968)