In 2013, 21% of adults globally were current smokers – 950 million men and
177 million women. Despite increasing global population between 2007 and 2013,
smoking prevalence has actually declined worldwide from 23% in 2007, preventing
an increase in the number of smokers in the world. The total remains at 1.1
billion smokers globally in 2013. Smoking prevalence is highest in high-income
countries, with a quarter of adults (25%) in 2013 being current smokers. In contrast,
21% of adults living in middle-income countries and 16% of adults in low-income
countries were current smokers