63% (1968)

70% (1974)

48% (1968)

41% (1976)

42% (1969)

45% (1963)

58% (1969)

0% (1951)

42% (1976)

43% (1984)

20% (1964)

68% (1954)

70% (1954)

38% (1966)

50% (1953)

33% (1971)

30% (1967)

0% (1950)

10% (1974)

20% (1964)