68% (1969)

64% (1973)

51% (1966)

62% (1958)

70% (1969)

71% (1972)

55% (1969)

59% (1974)

56% (1971)

54% (1971)

68% (1968)

62% (1966)

61% (1962)

52% (1962)

33% (1971)

59% (1967)

88% (1985)

50% (1959)

58% (1971)

0% (1965)