Secondary education, duration (years) is the number of grades (years) in secondary school.
| तिथि | मान | बदले , % |
|---|---|---|
| 2019 | 6.0 | 0.00% |
| 2018 | 6.0 | 0.00% |
| 2015 | 6.0 | 0.00% |
| 2014 | 6.0 | -25.00% |
| 2013 | 8.0 | 0.00% |
| 2012 | 8.0 | 0.00% |
| 2011 | 8.0 | 0.00% |
| 2010 | 8.0 | 0.00% |
| 2009 | 8.0 | 0.00% |
| 2008 | 8.0 | 0.00% |
| 2007 | 8.0 | 0.00% |
| 2006 | 8.0 |