52% (1989)

64% (1957)

58% (2010)

66% (1941)

56% (1984)

58% (1955)

54% (1943)

55% (1988)

69% (1954)

68% (2002)

61% (1931)

67% (1958)

61% (1986)

62% (1957)

59% (1949)

65% (1963)

69% (1953)

56% (1986)

55% (1947)

47% (1990)