| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.2%
|
| -7 | Prices are regulated | 188 |
31.2%
|
| -6 | Prices set by HQ | 11 |
1.8%
|
| 1 | Yes | 133 |
22.1%
|
| 2 | No | 270 |
44.8%
|