| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.2%
|
| 1 | Possible to achieve without much effort | 23 |
3.7%
|
| 2 | Possible to achieve with some effort | 77 |
12.2%
|
| 3 | Possible to achieve with normal amount of effort | 289 |
45.9%
|
| 4 | Possible to achieve with more than normal effort | 172 |
27.3%
|
| 5 | Only possible to achieve with extraordinary effort | 62 |
9.9%
|
| 6 | Targets were not achieved | 5 |
0.8%
|
| Sysmiss | 571 |