Tip: See my list of the Most Common Mistakes in English. It will teach you how to avoid mistakes with commas, prepositions, irregular verbs, and much more (PDF Version).
The following map shows the average number of cigarettes an adult consumes per year. The definition of an adult differs from study to study, but most studies included people aged 15 and older.
The map is based on a table that compiles data from various studies and was released in 2007 (Edit: The table unfortunately doesn’t seem to be online anymore).
By the way, I have written several educational ebooks. If you get a copy, you can learn new things and support this website at the same time—why don’t you check them out?
Where to go next? I have created over 200 maps. Check out my other maps