| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 2 |
1.7%
|
| 1 | increased | 51 |
44.3%
|
| 2 | remained the same | 47 |
40.9%
|
| 3 | decreased | 15 |
13%
|
| Sysmiss | 971 |