| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
0.9%
|
| -7 | Prices are regulated | 178 |
18.2%
|
| -6 | Prices set by HQ | 43 |
4.4%
|
| 1 | Yes | 187 |
19.1%
|
| 2 | No | 562 |
57.4%
|