| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.3%
|
| -7 | Prices are regulated | 9 |
5.9%
|
| -6 | Prices set by HQ | 18 |
11.8%
|
| 1 | Yes | 11 |
7.2%
|
| 2 | No | 112 |
73.7%
|