| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Prices are regulated | 13 |
7.5%
|
| -6 | Prices set by HQ | 3 |
1.7%
|
| 1 | Yes | 9 |
5.2%
|
| 2 | No | 148 |
85.5%
|