60% (1958)

52% (1975)

0% (1953)

43% (1961)

48% (1974)

90% (1955)

40% (1962)

70% (1960)

70% (1953)

45% (1956)

30% (1973)

60% (1963)

50% (1959)

0% (1957)

50% (1955)

50% (1960)

60% (1958)

54% (1958)

20% (1970)

40% (1956)