| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 514 |
0.3%
|
| 2 | yes, can do with a lot of difficulty | 552 |
0.3%
|
| 3 | yes, can do with some difficulty | 869 |
0.5%
|
| 4 | yes, can do with no difficulty | 156132 |
98.6%
|
| 8 | don't know | 216 |
0.1%
|
| Sysmiss | 4176 |