| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.4%
|
| -7 | Prices are regulated | 9 |
3.7%
|
| -6 | Prices set by HQ | 1 |
0.4%
|
| 1 | Yes | 75 |
30.5%
|
| 2 | No | 160 |
65%
|