64% (1964)

57% (1962)

52% (1961)

72% (1952)

56% (1961)

55% (1962)

65% (1951)

47% (1955)

50% (1956)

77% (1963)

45% (1957)

53% (1963)

46% (1960)

45% (1949)

61% (1956)

67% (1952)

53% (1952)

10% (1966)

52% (1950)

53% (1948)