66% (1956)

58% (1963)

65% (1976)

59% (1964)

61% (1956)

38% (1957)

46% (1976)

60% (1974)

45% (1959)

71% (1964)

50% (1954)

0% (1949)

53% (1954)

72% (1957)

40% (1932)

48% (1962)

62% (1970)

60% (1961)

70% (1965)

62% (1964)