Fig. 3From: Shock and awe or incentive-compatible harm reduction? Graphic health warnings on tobacco packagesCanada monthly smoking prevalence and prices, 1999–2005. Sources: Canada monthly smoking prevalence of smoking data are extracted from the Canadian Tobacco Use Monitoring Surveys (CTUMS), using the ODESI access system (Ontario Data Documentation Extraction Service Infrastructure). Canada monthly cigarette prices are from CANSIM 326-0020Back to article page