64% (1964)

72% (1952)

45% (1957)

52% (1961)

56% (1961)

57% (1962)

65% (1951)

55% (1962)

47% (1955)

46% (1960)

61% (1956)

53% (1952)

10% (1966)

60% (1950)

48% (1955)

50% (1956)

0% (1966)

66% (1952)

45% (1949)

52% (1950)