| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
0.6%
|
| -7 | Prices are regulated | 38 |
7.9%
|
| -6 | Prices set by HQ | 7 |
1.5%
|
| 1 | Yes | 119 |
24.8%
|
| 2 | No | 313 |
65.2%
|