| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 13 |
1.1%
|
| 1 | Rather bad | 63 |
5.1%
|
| 2 | Quite bad | 163 |
13.2%
|
| 3 | Neither good nor bad | 193 |
15.6%
|
| 4 | Quite good | 394 |
31.9%
|
| 5 | Very good | 411 |
33.2%
|