Rückgang des Zigarettenkonsums: Unterschied zwischen den Versionen

Rückgang des Zigarettenkonsums (Quelltext anzeigen)

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+*1954-2013: von 45% auf 18%
 *[http://en.wikipedia.org/wiki/Prevalence_of_tobacco_consumption Prevalence of tobacco consumption, in: en.wikipedia]
-:Smoking rates in the United States have dropped by half from 1965 to 2006 falling from 42% to 20.8% of adults.[39] As of 2013, the number of American smokers is 17.8% according to the Centers for Disease Control and Prevention.
+:Smoking rates in the United States have dropped by half from 1965 to 2006 falling from 42% to 20.8% of adults. As of 2013, the rate of American smokers is 17.8% according to the Centers for Disease Control and Prevention.
 *[http://www.gallup.com/poll/109048/us-smoking-rate-still-coming-down.aspx us smoking rate still coming down  July 24, 2008]