| Value | Category | Cases | |
|---|---|---|---|
| -97 | Refused | 12 |
0.2%
|
| 0 | No difficulty | 7327 |
97.7%
|
| 1 | Some difficulty | 142 |
1.9%
|
| 2 | A lot of difficulty | 19 |
0.3%
|
| 3 | Cannot do entirely | 2 |
0%
|