73% (1960)

65% (1946)

64% (1961)

57% (1973)

62% (1963)

50% (1949)

65% (1957)

58% (1963)

50% (1966)

70% (1966)

70% (1953)

60% (1948)

62% (1968)

60% (1973)

63% (1961)

63% (1962)

65% (1944)

45% (1958)

66% (1954)

73% (1960)