| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 41 |
1.4%
|
| 2 | Primary | 664 |
23.2%
|
| 3 | Secondary | 1418 |
49.5%
|
| 4 | Higher | 541 |
18.9%
|
| Sysmiss | 202 |
7%
|