| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
1.1%
|
| -7 | Prices are regulated | 18 |
5.1%
|
| -6 | Prices set by HQ | 10 |
2.8%
|
| 1 | Yes | 53 |
15.1%
|
| 2 | No | 266 |
75.8%
|