| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Prices are regulated | 72 |
18.9%
|
| -6 | Prices set by HQ | 10 |
2.6%
|
| 1 | Yes | 70 |
18.4%
|
| 2 | No | 228 |
60%
|