The findings are not based on economic statistics, such as tax revenue. Rather, it's based on a health survey conducted by eurostat, as indicated by this link f

The findings are not based on economic statistics, such as tax revenue. Rather, it's based on a health survey conducted by eurostat, as indicated by this link from the article: http://ec.europa.eu/eurostat/statistics-explained/index.php/Tobacco_consumption_statistics#Daily_smokers_of_cigarettes http://ec.europa.eu/eurostat/statistics-explained/index.php/...