| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 167 |
0.5%
|
| 2 | yes, can do with a lot of difficulty | 203 |
0.7%
|
| 3 | yes, can do with some difficulty | 293 |
1%
|
| 4 | yes, can do with no difficulty | 29915 |
97.6%
|
| 8 | don't know | 71 |
0.2%
|
| Sysmiss | 13965 |