| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 327765 |
96.9%
|
| 2 | Yes, some difficulty | 7866 |
2.3%
|
| 3 | Yes, a lot of difficulty | 2306 |
0.7%
|
| 4 | Cannot do at all | 467 |
0.1%
|