| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 13 |
1.1%
|
| 1 | Rather bad | 68 |
5.5%
|
| 2 | Quite bad | 105 |
8.5%
|
| 3 | Neither good, nor bad | 191 |
15.4%
|
| 4 | Quite good | 459 |
37.1%
|
| 5 | Very good | 401 |
32.4%
|