Top 20 countries with the highest smoking rates, according to data from the World Health Organization (WHO) and Wisevoter: Nauru: This small island nation in the Pacific tops the list with More than 100 million people around the world now use e cigarettes, including at least 15 million children, according to the World Health Organization (WHO). The organisation has warned that vaping is fuelling Britain to encourage smokers to swap cigarettes for vapes in world first health initiative ABC News Electronic cigarette Wikipedia Chart: 11% of Americans Smoke E Cigarettes Statista