59% (1963)

65% (1958)

62% (1992)

51% (1952)

63% (1955)

64% (1980)

55% (2010)

57% (1939)

56% (1988)

62% (1955)

54% (1953)

70% (1933)

66% (1997)

65% (1977)

70% (2009)

71% (1940)

71% (1960)

64% (1992)

51% (1994)

55% (1989)