| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Prices are regulated | 8 |
5.1%
|
| -6 | Prices set by HQ | 5 |
3.2%
|
| 1 | Yes | 39 |
24.8%
|
| 2 | No | 105 |
66.9%
|