| Value | Category | Cases | |
|---|---|---|---|
| 1 | Proficient | 4353 |
25.1%
|
| 2 | Good | 5284 |
30.5%
|
| 3 | Basic | 2739 |
15.8%
|
| 4 | None | 4966 |
28.6%
|
| 9 | Missing value | 3 |
0%
|