| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 57984 |
95.2%
|
| 2 | Some difficulty | 427 |
0.7%
|
| 3 | A lot of difficulty | 170 |
0.3%
|
| 4 | Cannot do at all | 154 |
0.3%
|
| 5 | Not applicable | 2154 |
3.5%
|