57% (1962)

52% (1961)

72% (1952)

55% (1962)

64% (1964)

56% (1961)

65% (1951)

61% (1956)

50% (1956)

47% (1955)

53% (1952)

10% (1966)

0% (1966)

60% (1950)

46% (1960)

48% (1955)

45% (1957)

45% (1949)

66% (1952)

52% (1950)