| Variable | Year | Supplement |
|---|---|---|
| ANOUSPL1 | 2014 | Sample adult questionnaire |
| ANOUSPL1 | 2013 | Sample adult questionnaire |
| ANOUSPL1 | 2012 | Sample adult questionnaire |
| ANOUSPL1 | 2011 | Sample adult questionnaire |
| CNOUSPL1 | 2014 | Sample child questionnaire |
| CNOUSPL1 | 2013 | Sample child questionnaire |
| CNOUSPL1 | 2012 | Sample child questionnaire |
| CNOUSPL1 | 2011 | Sample child questionnaire |