| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
1.9%
|
| -7 | Prices are regulated | 88 |
24.1%
|
| -6 | Prices set by HQ | 21 |
5.8%
|
| 1 | Yes | 39 |
10.7%
|
| 2 | No | 210 |
57.5%
|