70% (2006)

69% (1940)

73% (1960)

72% (1954)

63% (1999)

80% (1982)

61% (2001)

60% (1996)

64% (1997)

60% (1985)

56% (1999)

68% (1982)

73% (1992)

66% (1945)

59% (2004)

74% (1970)

54% (1995)

68% (1995)

70% (1942)

72% (1983)