| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.3%
|
| -7 | Prices are regulated | 91 |
12.5%
|
| -6 | Prices set by HQ | 16 |
2.2%
|
| 1 | Yes | 160 |
21.9%
|
| 2 | No | 460 |
63.1%
|