| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 |
3.2%
|
| -7 | Prices are regulated | 179 |
29.9%
|
| -6 | Prices set by HQ | 35 |
5.9%
|
| 1 | Yes | 72 |
12%
|
| 2 | No | 293 |
49%
|