| Value | Category | Cases | |
|---|---|---|---|
| 1 | Proficient | 162 |
4%
|
| 2 | Good | 248 |
6.2%
|
| 3 | Basic | 507 |
12.6%
|
| 4 | None | 3092 |
77.1%
|
| 9 | Missing value | 3 |
0.1%
|