| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
2.2%
|
| 1 | Increase | 168 |
46.7%
|
| 2 | Decrease | 77 |
21.4%
|
| 3 | Stay the same | 107 |
29.7%
|