| Year | Less than 8 grades of primary school | Primary (general) school | Vocational and apprentice school | Grammar school | Other secondary school | College | University | Total |
|---|
| Total | ||||||||
| 2006 | 41.3 | 15.8 | 8.1 | 6.9 | 5.5 | 3.1 | 1.9 | 7.5 |
| 2007 | 46.0 | 16.5 | 7.7 | 6.0 | 5.6 | 3.3 | 1.9 | 7.4 |
| 2008 | 43.9 | 18.1 | 8.2 | 7.3 | 5.6 | 3.3 | 1.8 | 7.8 |
| 2009 | 41.3 | 22.6 | 11.3 | 8.6 | 7.3 | 4.7 | 2.5 | 10.0 |
| 2010 | 43.8 | 24.3 | 12.3 | 10.1 | 8.6 | 5.2 | 3.7 | 11.2 |
| 2011 | 51.1 | 24.0 | 12.4 | 10.4 | 8.6 | 5.0 | 3.2 | 11.0 |
| 2012 | 45.8 | 24.0 | 12.2 | 11.6 | 8.7 | 5.0 | 3.6 | 11.0 |
| 2013 | 38.9 | 23.0 | 11.4 | 10.2 | 8.2 | 4.6 | 2.8 | 10.2 |
| 2014 | 34.7 | 17.9 | 8.3 | 7.9 | 6.1 | 3.7 | 2.3 | 7.7 |
| 2015 | 29.9 | 16.8 | 7.3 | 6.4 | 5.2 | 2.8 | 1.9 | 6.8 |
| 2016 | 22.2 | 12.8 | 5.5 | 5.0 | 3.7 | 1.7 | 1.9 | 5.1 |
| 2017 | 25.0 | 10.5 | 4.2 | 4.6 | 2.7 | 1.8 | 1.3 | 4.2 |
| 2018 | 21.6 | 9.8 | 3.6 | 3.9 | 2.8 | 1.5 | 1.4 | 3.7 |
| 2019 | 19.2 | 9.3 | 3.3 | 3.4 | 2.4 | 1.4 | 1.7 | 3.4 |
| 2020 | 19.2 | 10.5 | 4.4 | 4.4 | 3.6 | 2.0 | 1.7 | 4.3 |
| Male | ||||||||
| 2006 | 35.5 | 16.4 | 7.0 | 7.1 | 4.6 | 3.0 | 2.1 | 7.1 |
| 2007 | 41.6 | 17.7 | 6.8 | 6.3 | 4.8 | 2.9 | 1.7 | 7.1 |
| 2008 | 36.0 | 19.6 | 7.7 | 7.3 | 4.6 | 3.0 | 1.4 | 7.7 |
| 2009 | 37.8 | 24.2 | 10.7 | 9.0 | 7.2 | 4.5 | 2.7 | 10.3 |
| 2010 | 39.6 | 26.7 | 12.2 | 9.2 | 8.1 | 6.1 | 3.7 | 11.6 |
| 2011 | 44.4 | 24.7 | 12.1 | 9.1 | 8.0 | 4.9 | 3.2 | 11.1 |
| 2012 | 42.3 | 24.5 | 12.0 | 13.1 | 8.6 | 4.9 | 3.3 | 11.3 |
| 2013 | 38.4 | 23.9 | 10.8 | 10.6 | 7.8 | 4.1 | 2.7 | 10.2 |
| 2014 | 31.3 | 17.8 | 7.8 | 7.4 | 5.8 | 3.7 | 1.9 | 7.6 |
| 2015 | 29.0 | 16.1 | 6.7 | 6.0 | 5.1 | 2.7 | 1.7 | 6.6 |
| 2016 | 24.8 | 13.2 | 4.9 | 4.7 | 3.7 | 1.3 | 2.3 | 5.1 |
| 2017 | 22.0 | 10.5 | 3.6 | 4.0 | 2.2 | 1.5 | 1.3 | 3.8 |
| 2018 | 17.4 | 9.8 | 3.2 | 3.3 | 2.5 | 1.8 | 0.6 | 3.5 |
| 2019 | 16.8 | 9.1 | 3.1 | 3.8 | 2.1 | 1.6 | 1.4 | 3.4 |
| 2020 | 23.1 | 10.2 | 4.1 | 3.6 | 3.4 | 1.6 | 1.6 | 4.1 |
| Female | ||||||||
| 2006 | 51.8 | 15.2 | 10.4 | 6.7 | 6.4 | 3.1 | 1.7 | 7.9 |
| 2007 | 53.7 | 15.3 | 9.7 | 5.8 | 6.4 | 3.6 | 2.3 | 7.7 |
| 2008 | 56.0 | 16.4 | 9.6 | 7.3 | 6.6 | 3.5 | 2.3 | 8.0 |
| 2009 | 45.9 | 20.9 | 12.6 | 8.4 | 7.5 | 4.8 | 2.3 | 9.7 |
| 2010 | 47.8 | 21.6 | 12.6 | 10.7 | 9.0 | 4.6 | 3.6 | 10.7 |
| 2011 | 58.2 | 23.2 | 12.9 | 11.2 | 9.3 | 5.0 | 3.1 | 11.0 |
| 2012 | 50.6 | 23.5 | 12.7 | 10.7 | 8.8 | 5.1 | 4.0 | 10.6 |
| 2013 | 39.6 | 22.0 | 12.8 | 9.9 | 8.6 | 4.9 | 3.0 | 10.1 |
| 2014 | 38.8 | 17.9 | 9.3 | 8.2 | 6.5 | 3.7 | 2.9 | 7.9 |
| 2015 | 31.3 | 17.6 | 8.7 | 6.8 | 5.4 | 2.8 | 2.2 | 7.0 |
| 2016 | 19.5 | 12.3 | 6.8 | 5.2 | 3.7 | 2.0 | 1.5 | 5.1 |
| 2017 | 27.7 | 10.5 | 5.4 | 5.0 | 3.3 | 2.1 | 1.3 | 4.6 |
| 2018 | 25.3 | 9.8 | 4.3 | 4.3 | 3.0 | 1.3 | 2.3 | 4.0 |
| 2019 | 21.2 | 9.5 | 3.7 | 3.1 | 2.9 | 1.4 | 1.9 | 3.5 |
| 2020 | 15.1 | 11.0 | 5.0 | 5.1 | 3.8 | 2.3 | 1.8 | 4.5 |