| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 88 |
6.1%
|
| -7 | Prices are regulated | 539 |
37.4%
|
| -6 | Prices are set by headquarters | 107 |
7.4%
|
| 1 | Yes | 199 |
13.8%
|
| 2 | No | 510 |
35.3%
|
| Sysmiss | 1512 |