66% (1973)

69% (1956)

58% (1972)

62% (1953)

61% (1971)

53% (1973)

54% (1975)

52% (1977)

59% (1975)

56% (1960)

67% (1979)

67% (1947)

35% (1973)

43% (1974)

61% (1974)

62% (1970)

51% (1973)

63% (1972)

52% (1972)

0% (1973)