75% (1940)

76% (1925)

74% (1949)

69% (1942)

58% (1993)

73% (1966)

53% (2006)

72% (1956)

62% (1957)

71% (1938)

63% (2003)

72% (1926)

63% (2007)

63% (1997)

63% (1983)

70% (2005)

70% (1950)

71% (1970)

64% (1948)

70% (1986)