61% (1973)

64% (1965)

49% (1973)

52% (1973)

61% (1970)

62% (1962)

53% (1973)

77% (1967)

45% (1972)

61% (1963)

46% (1975)

63% (1967)

53% (1974)

56% (1971)

67% (1967)

50% (1963)

60% (1973)

61% (1962)

50% (1974)

64% (1973)