| Value | Category | Cases | |
|---|---|---|---|
| 1 | No, no difficulty | 38272 |
98.7%
|
| 2 | Yes, some | 397 |
1%
|
| 3 | Yes, a lot | 95 |
0.2%
|
| 4 | Cannot do at all | 22 |
0.1%
|
| Sysmiss | 6066 |