57% (1935)

63% (1956)

60% (1921)

35% (1951)

55% (1976)

53% (1930)

38% (1967)

62% (1973)

69% (1925)

63% (1942)

53% (1945)

64% (1941)

54% (1957)

52% (1947)

70% (1976)

47% (1973)

50% (1960)

60% (1970)

70% (1921)

64% (2002)