Secondary education, duration (years) is the number of grades (years) in secondary school.
| Date | Valeur | Modifier , % |
|---|---|---|
| 2019 | 7,0 | 0,00 % |
| 2018 | 7,0 | 0,00 % |
| 2016 | 7,0 | 0,00 % |
| 2015 | 7,0 | 0,00 % |
| 2014 | 7,0 | 0,00 % |
| 2013 | 7,0 | 0,00 % |
| 2012 | 7,0 | 0,00 % |
| 2011 | 7,0 | 0,00 % |
| 2010 | 7,0 | 0,00 % |
| 2009 | 7,0 | 0,00 % |
| 2008 | 7,0 | 0,00 % |
| 2007 | 7,0 |