| Value | Category | Cases | |
|---|---|---|---|
| -97 | Refused | 13 |
0.2%
|
| 0 | No difficulty | 7383 |
98.4%
|
| 1 | Some difficulty | 94 |
1.3%
|
| 2 | A lot of difficulty | 8 |
0.1%
|
| 3 | Cannot do entirely | 4 |
0.1%
|