| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Prices are regulated | 96 |
15.4%
|
| -6 | Prices set by HQ | 13 |
2.1%
|
| 1 | Yes | 90 |
14.5%
|
| 2 | No | 423 |
68%
|