68% (1974)

50% (1950)

63% (1933)

68% (1974)

69% (1937)

73% (1960)

55% (1996)

61% (1969)

70% (1980)

62% (2002)

58% (2000)

65% (1976)

66% (1972)

56% (1977)

67% (1995)

78% (1947)

63% (1970)

72% (1963)

62% (1963)

79% (1982)