54% (1975)

64% (1959)

47% (1949)

49% (1977)

48% (1940)

43% (1956)

67% (1952)

50% (1965)

62% (1958)

63% (1937)

60% (1929)

46% (1975)

69% (1925)

55% (1976)

58% (1966)

62% (1985)

59% (1989)

57% (1970)

58% (1951)

60% (1963)