63% (1968)

43% (1984)

58% (1969)

70% (1974)

41% (1976)

42% (1976)

38% (1966)

33% (1971)

42% (1969)

48% (1968)

68% (1954)

45% (1965)

50% (1953)

10% (1974)

15% (1980)

45% (1963)

50% (1955)

20% (1964)

0% (1950)

20% (1964)