| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
0.8%
|
| -7 | Prices are regulated | 50 |
8.2%
|
| -6 | Prices set by HQ | 9 |
1.5%
|
| 1 | Yes | 150 |
24.5%
|
| 2 | No | 398 |
65%
|