| Value | Category | Cases | |
|---|---|---|---|
| 1 | Primary or none | 569 |
2.8%
|
| 2 | Secondary | 2359 |
11.5%
|
| 3 | Higher | 1806 |
8.8%
|
| 5 | No information | 7 |
0%
|
| Sysmiss | 15776 |
76.9%
|