55% (1974)

59% (1963)

54% (1955)

67% (1955)

56% (1962)

53% (1957)

65% (1951)

64% (1976)

47% (1969)

60% (1950)

50% (1964)

50% (1966)

73% (1960)

58% (1952)

65% (1946)

60% (1973)

62% (1951)

73% (1960)

100% (1967)

63% (1961)