55% (1960)

58% (1951)

47% (1974)

23% (1974)

60% (1961)

30% (1971)

60% (1956)

52% (1963)

0% (1980)

50% (1959)

100% (1954)

50% (1961)

50% (1959)

10% (1958)

58% (1951)

0% (1956)