| Value | Category | Cases | |
|---|---|---|---|
| 1 | Increased | 10 |
4.7%
|
| 2 | Stayed the same | 87 |
40.8%
|
| 3 | Decreased | 98 |
46%
|
| 4 | Not received | 18 |
8.5%
|
| Sysmiss | 1997 |