65% (1953)

59% (1963)

62% (1977)

63% (1990)

62% (1964)

69% (1932)

59% (1954)

65% (1929)

59% (1959)

65% (1933)

59% (1975)

46% (1993)

55% (1985)

60% (1956)

64% (1958)

67% (1932)

56% (1942)

69% (1943)

70% (1939)

48% (1986)