50% (1953)

53% (1966)

68% (1956)

58% (1958)

40% (1946)

64% (1958)

54% (1961)

75% (1953)

43% (1961)

10% (1957)

0% (1946)

49% (1967)

50% (1954)

53% (1959)

0% (1963)

56% (1960)

53% (1961)

54% (1969)

57% (1957)

50% (1958)