| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.4%
|
| -7 | Prices are regulated | 90 |
17.9%
|
| -6 | Prices set by HQ | 13 |
2.6%
|
| 1 | Yes | 48 |
9.6%
|
| 2 | No | 349 |
69.5%
|