Active smoking population in Sao Paulo city (%), Brazil, according to VIGITEL—2006 to 201142–47
| Year | Total (%) |
|---|---|
| 2006 | 18.8 |
| 2007 | 21.7 |
| 2008 | 21 |
| 2009 | 18.8 |
| 2010 | 19.6 |
| 2011 | 19.3 |
VIGITEL, Surveillance for risk factors and protection against chronic diseases by telephone survey.