| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
2.5%
|
| 1 | Increase | 121 |
50.4%
|
| 2 | Decrease | 20 |
8.3%
|
| 3 | Stay the same | 93 |
38.8%
|