55% (1994)

69% (1989)

62% (1993)

64% (2002)

79% (1940)

60% (2015)

57% (1989)

64% (1978)

60% (1998)

67% (1988)

62% (1987)

74% (1947)

67% (1976)

71% (1970)

68% (2007)

70% (1985)

59% (1997)

62% (1993)

63% (2007)

62% (1993)