70% (1956)

40% (1953)

33% (1958)

0% (1961)

23% (1952)

64% (1970)

60% (1956)

32% (1951)

40% (1971)

40% (1953)

0% (1955)

68% (1963)

52% (1955)

60% (1963)

40% (1956)

52% (1950)

65% (1956)

60% (1973)

60% (1955)

20% (1954)