51% (1931)

64% (1962)

51% (1949)

47% (1967)

63% (1945)

40% (1988)

61% (1936)

68% (1948)

49% (1932)

63% (1941)

70% (1940)

70% (1935)

67% (1968)

59% (1927)

70% (1924)

67% (1947)

67% (1955)

65% (1994)

48% (1979)

49% (1966)