61% (1947)

62% (1965)

52% (1967)

52% (1952)

60% (1968)

32% (1967)

60% (1959)

62% (1949)

71% (1976)

65% (1966)

53% (1974)

65% (1975)

63% (1951)

55% (1946)

32% (1967)

67% (1949)

47% (1956)

50% (1964)

30% (1970)

54% (1953)