| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Wave 1-2010/11 | 4996 |
25.8%
|
| 2 | 2. Wave 2-2012/13 | 4697 |
24.3%
|
| 3 | 3. Wave 3-2015/16 | 4591 |
23.7%
|
| 4 | 4. Wave 4-2018/19 | 5047 |
26.1%
|