It is not really an statistic, but in Spain 90% of the cost of a pack is tax.
That is another good reason not to smoke. I pay enough "compulsory" tax already, to keep paying also "voluntary" tax.
And 100% of smokers quit. Some quit voluntarily, some quit by doctors orders, and some quit just briefly before... you know...passing
In my experience the success rate is close to 100%. I don´t know anybody that has seriously tried to quit and hasn´t quit in the end. OK, maybe it took them more than one try or longer than one year.
Like getting your driving licence. In Spain 40% of those who sit the theory exam fail it... from the other 60% that go on to actually do the practice test, 50% fail. That statistic looks even worse than the smoking one, doesn´t it? Come to Spain and you will find it hard to find anybody over 30 that hasn´t got a driving licence - wanting one, obviously.
That statistics that have been doing the rounds only count each one try and each one year. They are bulsh** .
Statistics like that are based on polls. Polls are bush** too.
Not those polls we do here, of course, those are scientifically proven methods of study and important decision-making tools ;)