| Value | Category | Cases | |
|---|---|---|---|
| 1 | JSS 2 | 1220 |
43.2%
|
| 2 | JSS 3 | 836 |
29.6%
|
| 3 | SSS 1 | 322 |
11.4%
|
| 4 | SSS 2 | 446 |
15.8%
|
| Sysmiss | 107 |