| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 1 |
1.6%
|
| 1 | increased | 15 |
24.6%
|
| 2 | remained the same | 41 |
67.2%
|
| 3 | decreased | 4 |
6.6%
|
| Sysmiss | 894 |