| Value | Category | Cases | |
|---|---|---|---|
| 1 | Proficient | 2496 |
87.2%
|
| 2 | Good | 256 |
8.9%
|
| 3 | Basic | 78 |
2.7%
|
| 4 | None | 30 |
1%
|
| 9 | Missing value | 3 |
0.1%
|