60% (1931)

56% (1943)

54% (1950)

63% (1938)

53% (1930)

52% (1933)

58% (1956)

62% (1935)

52% (1943)

60% (1933)

54% (1934)

55% (1936)

58% (1936)

69% (1956)

60% (1937)

68% (1948)

63% (1932)

56% (1949)

54% (1935)

73% (1943)