Statistics are a way we can measure Canada's success in promoting lung health and preventing lung disease.
If you plan on doing in-depth research that requires statistics, go to an academic, hospital, or government library that you're qualified to use. If you don't have privileges at one such library, go to your local public library. Some libraries are official repositories of government statistics- they have much more data than what's available for free on the web. Some librarians have special training in finding statistics.