| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 1 |
1.6%
|
| 1 | increased | 33 |
54.1%
|
| 2 | remained the same | 22 |
36.1%
|
| 3 | decreased | 5 |
8.2%
|
| Sysmiss | 894 |