| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 0 |
0%
|
| -8 | Refused | 0 |
0%
|
| 1 | Increase | 2 |
3.8%
|
| 2 | Remain the same | 8 |
15.4%
|
| 3 | Decrease | 42 |
80.8%
|
| Sysmiss | 903 |