60% (1915)

46% (1970)

64% (1942)

60% (1929)

61% (1952)

49% (1932)

59% (1944)

45% (1945)

63% (1936)

66% (1951)

50% (1936)

62% (1965)

57% (1980)

63% (1936)

61% (1962)

66% (1979)

60% (1939)

55% (1929)

44% (1947)

71% (1967)