| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 58 |
0.1%
|
| 2 | yes, can do with a lot of difficulty | 400 |
1%
|
| 3 | yes, can do with some difficulty | 1298 |
3.3%
|
| 4 | yes, can do with no difficulty | 37366 |
95.5%
|
| 8 | don't know | 16 |
0%
|
| Sysmiss | 5476 |