72% (1955)

51% (1970)

75% (1953)

61% (1959)

58% (1965)

53% (1961)

63% (1967)

50% (1953)

53% (1966)

43% (1961)

53% (1960)

54% (1961)

58% (1958)

56% (1960)

34% (1966)

50% (1965)

0% (1963)

70% (1966)

20% (1955)

68% (1962)