| Value | Category | Cases | |
|---|---|---|---|
| -97 | Refused | 28 |
0.4%
|
| 0 | No difficulty | 7256 |
96.7%
|
| 1 | Some difficulty | 205 |
2.7%
|
| 2 | A lot of difficulty | 11 |
0.1%
|
| 3 | Cannot do entirely | 2 |
0%
|