| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.1%
|
| -7 | Prices are regulated | 49 |
4.9%
|
| -6 | Prices set by HQ | 20 |
2%
|
| 1 | Yes | 302 |
30%
|
| 2 | No | 635 |
63.1%
|