| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.4%
|
| -7 | Prices are regulated | 12 |
8.3%
|
| -6 | Prices set by HQ | 1 |
0.7%
|
| 1 | Yes | 36 |
24.8%
|
| 2 | No | 94 |
64.8%
|