73% (1935)

49% (1976)

52% (1987)

59% (1955)

51% (1994)

59% (1954)

61% (1952)

65% (1942)

62% (1997)

63% (1989)

61% (1991)

75% (1963)

63% (1987)

55% (1989)

59% (2002)

70% (1963)

59% (1958)

64% (1992)

65% (1972)

58% (1988)