| Variable | Year | Supplement |
|---|---|---|
| TOTOZ_P | 2018 | Sample child questionnaire |
| TOTOZ_P | 2017 | Sample child questionnaire |
| TOTOZ_P | 2016 | Sample child questionnaire |
| TOTOZ_P | 2015 | Sample child questionnaire |
| TOTOZ_P | 2010 | |
| TOTOZ_P | 2009 | |
| TOTOZ_P | 2008 | |
| TOTOZ_P | 2007 | |
| TOTOZ_P | 2006 | |
| TOTOZ_P | 2005 | |
| TOTOZ_P | 2004 |