| Value | Category | Cases | |
|---|---|---|---|
| 1 | no, can't do it | 61 |
0.1%
|
| 2 | yes, can do with a lot of difficulty | 200 |
0.4%
|
| 3 | yes, can do with some difficulty | 1247 |
2.8%
|
| 4 | yes, can do with no difficulty | 43057 |
96.6%
|
| 8 | don't know | 3 |
0%
|
| Sysmiss | 46 |