| Value | Category | Cases | |
|---|---|---|---|
| 1 | Proficient | 43 |
1.1%
|
| 2 | Good | 28 |
0.7%
|
| 3 | Basic | 23 |
0.6%
|
| 4 | None | 3885 |
96.8%
|
| 9 | Missing value | 33 |
0.8%
|