60% (1934)

59% (1958)

61% (1941)

57% (1990)

72% (1938)

52% (1999)

60% (1953)

57% (1963)

62% (1931)

61% (1980)

67% (1968)

63% (1971)

62% (2000)

70% (1934)

68% (1936)

48% (1929)

57% (1972)

60% (1945)

56% (1964)

63% (1955)