41% (1960)

52% (1966)

53% (1965)

80% (1956)

63% (1971)

43% (1961)

61% (1957)

0% (1956)

53% (1954)

57% (1971)

60% (1967)

62% (1958)

59% (1959)

40% (1975)

60% (1955)

60% (1964)

0% (1966)

50% (1963)

40% (1966)

68% (1954)