| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 2196 |
86.5%
|
| 2 | Some difficulty | 298 |
11.7%
|
| 3 | A lot of difficulty | 40 |
1.6%
|
| 4 | Cannot do at all | 6 |
0.2%
|
| 97 | Don't know | 0 |
0%
|
| 99 | Refuse to answer | 0 |
0%
|