| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Prices are regulated | 102 |
16.6%
|
| -6 | Prices set by HQ | 26 |
4.2%
|
| 1 | Yes | 121 |
19.7%
|
| 2 | No | 366 |
59.5%
|