56% (1985)

59% (1963)

52% (1976)

61% (1986)

63% (1989)

70% (1939)

64% (1983)

62% (1964)

61% (1934)

63% (1964)

64% (1958)

53% (1983)

48% (1986)

69% (1970)

69% (1986)

56% (1991)

62% (1991)

69% (1940)

79% (2003)

71% (1937)