| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. per day | 95 |
3.7%
|
| 2 | 2. per month | 2395 |
94.5%
|
| 3 | 3. per semester | 5 |
0.2%
|
| 4 | 4. per academic year | 31 |
1.2%
|
| 5 | 5. per school period | 9 |
0.4%
|
| 9 | 9. Missing | 0 |
0%
|
| Sysmiss | 11696 |