50% (1971)

57% (1963)

60% (1953)

62% (1952)

50% (1963)

79% (1951)

50% (1966)

56% (1950)

47% (1980)

56% (1952)

50% (1970)

53% (1961)

50% (1950)

53% (1949)

61% (1961)

68% (1959)

80% (1963)

60% (1942)

50% (1975)

50% (1955)