| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
1.2%
|
| -7 | Prices are regulated | 102 |
14.1%
|
| -6 | Prices set by HQ | 13 |
1.8%
|
| 1 | Yes | 112 |
15.5%
|
| 2 | No | 487 |
67.4%
|