| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 11606 |
39.9%
|
| 2 | Primary | 6336 |
21.8%
|
| 3 | Secondary + | 11128 |
38.3%
|
| 9 | Missing/dk | 7 |
0%
|
| Sysmiss | 272 |