| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
1.4%
|
| -7 | Prices are regulated | 26 |
7.4%
|
| -6 | Prices set by HQ | 6 |
1.7%
|
| 1 | Yes | 73 |
20.7%
|
| 2 | No | 243 |
68.8%
|