| Variable | Year | Supplement |
|---|---|---|
| ANOUSPL2 | 2014 | Sample adult questionnaire |
| ANOUSPL2 | 2013 | Sample adult questionnaire |
| ANOUSPL2 | 2012 | Sample adult questionnaire |
| ANOUSPL2 | 2011 | Sample adult questionnaire |
| CNOUSPL2 | 2014 | Sample child questionnaire |
| CNOUSPL2 | 2013 | Sample child questionnaire |
| CNOUSPL2 | 2012 | Sample child questionnaire |
| CNOUSPL2 | 2011 | Sample child questionnaire |