| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.3%
|
| -7 | Prices are regulated | 2 |
0.7%
|
| -6 | Prices set by HQ | 0 |
0%
|
| 1 | Yes | 22 |
7.2%
|
| 2 | No | 280 |
91.8%
|