85% (1966)

81% (1965)

56% (1980)

45% (1980)

70% (1967)

58% (1978)

10% (1975)

62% (1972)

48% (1976)

50% (1967)

20% (1976)

46% (1970)

0% (1958)

52% (1971)

53% (1979)

62% (1975)

52% (1977)

52% (1969)

85% (1969)

51% (1974)