| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
0.3%
|
| -7 | Prices are regulated | 124 |
13.1%
|
| -6 | Prices set by HQ | 69 |
7.3%
|
| 1 | Yes | 184 |
19.4%
|
| 2 | No | 567 |
59.9%
|