56% (1971)

50% (1966)

10% (1975)

53% (1963)

46% (1956)

50% (1960)

44% (1971)

55% (1957)

29% (1962)

50% (1961)

40% (1965)

37% (1964)

52% (1977)

55% (1958)

0% (1963)

43% (1978)

25% (1963)

40% (1961)

58% (1971)

50% (1957)