57% (2005)

0% (1970)

61% (1980)

78% (1962)

77% (1953)

50% (1989)

61% (1989)

70% (1982)

66% (1985)

73% (1975)

58% (1984)

63% (1990)

62% (2011)

59% (2011)

61% (2007)

63% (2001)

74% (1953)

77% (1996)

65% (1987)

69% (1974)