| Variable | Year | Supplement |
|---|---|---|
| ASISLPST | 2018 | Sample adult questionnaire |
| ASISLPST | 2017 | Sample adult questionnaire |
| ASISLPST | 2016 | Sample adult questionnaire |
| ASISLPST | 2015 | Sample adult questionnaire |
| ASISLPST | 2014 | Sample adult questionnaire |
| ASISLPST | 2013 | Sample adult questionnaire |