| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.5%
|
| -7 | Prices are regulated | 51 |
13.6%
|
| -6 | Prices set by HQ | 14 |
3.7%
|
| 1 | Yes | 56 |
14.9%
|
| 2 | No | 252 |
67.2%
|