| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
0.3%
|
| -7 | Prices are regulated | 221 |
17%
|
| -6 | Prices set by HQ | 136 |
10.5%
|
| 1 | Yes | 440 |
33.8%
|
| 2 | No | 499 |
38.4%
|