| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Prices are regulated | 14 |
9.3%
|
| -6 | Prices set by HQ | 13 |
8.7%
|
| 1 | Yes | 17 |
11.3%
|
| 2 | No | 106 |
70.7%
|