| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 488 |
3.5%
|
| 2 | Primary | 4448 |
31.6%
|
| 3 | Secondary | 6377 |
45.4%
|
| 4 | Higher | 2522 |
17.9%
|
| 9 | Missing/DK | 58 |
0.4%
|
| Sysmiss | 167 |
1.2%
|