| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.5%
|
| -7 | Prices are regulated | 47 |
12.4%
|
| -6 | Prices set by HQ | 4 |
1.1%
|
| 1 | Yes | 65 |
17.2%
|
| 2 | No | 260 |
68.8%
|