42% (1976)

64% (1968)

58% (1969)

41% (1976)

43% (1984)

45% (1965)

20% (1964)

33% (1971)

38% (1966)

42% (1969)

50% (1953)

48% (1968)

45% (1963)

69% (1974)

65% (1948)

68% (1954)

20% (1964)

0% (1950)

70% (1954)

30% (1967)