| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 333882 |
98.7%
|
| 2 | Yes, some difficulty | 3211 |
0.9%
|
| 3 | Yes, a lot of difficulty | 949 |
0.3%
|
| 4 | Cannot do at all | 362 |
0.1%
|