50% (1931)

43% (1933)

55% (1957)

50% (1963)

72% (1948)

69% (1949)

62% (1929)

57% (1929)

53% (1972)

63% (1935)

47% (1957)

62% (1973)

70% (1947)

65% (1985)

56% (1942)

15% (1984)

51% (1972)

44% (1951)

63% (1937)

66% (1932)