Consumption of cigarettes has increased  worldwide between 1970-1972 and remained relatively constant between 1990-1992. In economic developed countries , the trend of  continuous growing , has met a short period of stagnation in the ‘80s , but in developing countries, although smoking has been expanded to national scale much later, it started and evolved explosively. Probably the most spectacular evolution was recorded in Asia-Pacific, where consumption of cigarettes doubled between 1970-1990, (except for Singapore and New Zealand because of the prohibition of smoking). Also, existing data worldwide show that the habit of smoking continues to represent one of the most popular vices among both men and women.