| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 15 |
4.1%
|
| -7 | Prices are regulated | 138 |
37.5%
|
| -6 | Prices set by HQ | 16 |
4.3%
|
| 1 | Yes | 57 |
15.5%
|
| 2 | No | 142 |
38.6%
|