69% (1954)

56% (1951)

66% (1962)

66% (1953)

40% (1957)

52% (1952)

71% (1964)

50% (1964)

58% (1967)

69% (1948)

54% (1953)

56% (1957)

61% (1957)

61% (1953)

56% (1951)

60% (1963)

74% (1966)

60% (1959)

47% (1956)

70% (1954)