54% (1961)

74% (1964)

43% (1973)

56% (1963)

67% (1967)

65% (1966)

50% (1947)

40% (1960)

64% (1969)

0% (1925)

50% (1946)

70% (1932)

65% (1969)

80% (1964)

71% (1963)

63% (1946)

62% (1967)

70% (1944)

58% (1962)

60% (1942)