| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Prices are regulated | 13 |
3.8%
|
| -6 | Prices set by HQ | 3 |
0.9%
|
| 1 | Yes | 38 |
11%
|
| 2 | No | 291 |
84.3%
|