| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.1%
|
| -7 | Prices are regulated | 253 |
19.1%
|
| -6 | Prices set by HQ | 34 |
2.6%
|
| 1 | Yes | 267 |
20.2%
|
| 2 | No | 767 |
58%
|