| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
0.7%
|
| -7 | Prices are regulated | 7 |
1.1%
|
| -6 | Prices set by HQ | 3 |
0.5%
|
| 1 | Yes | 177 |
29.1%
|
| 2 | No | 418 |
68.6%
|