| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 73 |
7.1%
|
| -7 | Prices are regulated | 27 |
2.6%
|
| -6 | Prices set by HQ | 105 |
10.2%
|
| 1 | Yes | 92 |
8.9%
|
| 2 | No | 731 |
71.1%
|