Indians just don't quit, especially when it comes to smoking. According to the first nationally representative case control study of smoking and death in India, only 2% of adults were found to have quit smoking in the country. However, almost 90% of them did so after they had developed serious diseases. In comparison, China, which a decade back had similar cessation rate among smokers like India, has greatly improved to almost 10%. India's eastern neighbour Bangladesh too is better off with nearly 8% of smokers giving up smoking annually.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/indians-reluctant-stub-it-out-says-study
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/smoking
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india