| Value | Category | Cases | |
|---|---|---|---|
| 1 | Proficient | 120 |
3%
|
| 2 | Good | 193 |
4.8%
|
| 3 | Basic | 377 |
9.4%
|
| 4 | None | 3319 |
82.7%
|
| 9 | Missing value | 3 |
0.1%
|