| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 56690 |
93.1%
|
| 2 | Some difficulty | 440 |
0.7%
|
| 3 | A lot of difficulty | 220 |
0.4%
|
| 4 | Cannot do at all | 317 |
0.5%
|
| 5 | Not applicable | 3222 |
5.3%
|