| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Prices are regulated | 31 |
7.7%
|
| -6 | Prices set by HQ | 28 |
7%
|
| 1 | Yes | 55 |
13.7%
|
| 2 | No | 288 |
71.6%
|