| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Prices are regulated | 1 |
1%
|
| -6 | Prices set by HQ | 1 |
1%
|
| 1 | Yes | 12 |
11.7%
|
| 2 | No | 89 |
86.4%
|