According to the National Health Interview Survey, cigarette smoking among the American adults (aged ≥18 years) declined from 20.9% in 2005 to 15.5% in 2016. [...] The WHO report reveals that in 2015 there were 29 million fewer smokers compared with 2000. Still, some 1.1 billion people – 20% of the population over the age of 15- are active smokers.

Tommaso Di Giovanni, Director Global Communications, Philip Morris International has a similar point of view, as 'the World Health Organization acknowledges that this number is not going to decrease in the next decade, [...]