| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
7.2%
|
| -7 | Prices are regulated | 28 |
25.2%
|
| -6 | Prices set by HQ | 3 |
2.7%
|
| 1 | Yes | 18 |
16.2%
|
| 2 | No | 54 |
48.6%
|