| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Wave 1-2010/11 | 4801 |
33.9%
|
| 2 | 2. Wave 2-2012/13 | 4789 |
33.8%
|
| 3 | 3. Wave 3-2015/16 | 4582 |
32.3%
|