| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Wave 1-2010/11 | 15319 |
17.8%
|
| 2 | 2. Wave 2-2012/13 | 16200 |
18.8%
|
| 3 | 3. Wave 3-2015/16 | 26871 |
31.2%
|
| 4 | 4. Wave 4-2018/19 | 27607 |
32.1%
|