| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 50 |
0.9%
|
| 2 | yes, can do with a lot of difficulty | 42 |
0.7%
|
| 3 | yes, can do with some difficulty | 55 |
1%
|
| 4 | yes, can do with no difficulty | 5512 |
96.2%
|
| 8 | don't know | 68 |
1.2%
|
| Sysmiss | 38887 |