54% (1972)

63% (1970)

62% (1987)

60% (1970)

56% (1953)

72% (2014)

67% (1999)

61% (1940)

62% (1964)

66% (1954)

78% (2001)

64% (1953)

57% (1990)

56% (1966)

45% (1934)

63% (1957)

58% (1951)

53% (1975)

72% (1920)

56% (1955)