| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.6%
|
| -7 | Prices are regulated | 57 |
18.3%
|
| -6 | Prices set by HQ | 6 |
1.9%
|
| 1 | Yes | 72 |
23.2%
|
| 2 | No | 174 |
55.9%
|