| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 56 |
0.5%
|
| 2 | yes, can do with a lot of difficulty | 65 |
0.6%
|
| 3 | yes, can do with some difficulty | 120 |
1%
|
| 4 | yes, can do with no difficulty | 11207 |
97.3%
|
| 8 | don't know | 70 |
0.6%
|
| Sysmiss | 33096 |