| Value | Category | Cases | |
|---|---|---|---|
| 1 | No change | 311 |
35.7%
|
| 2 | Increased | 342 |
39.3%
|
| 3 | Decreased | 137 |
15.7%
|
| 4 | Refused to answer | 80 |
9.2%
|
| 99 | N/R | 0 |
0%
|
| 999 | N/A | 0 |
0%
|
| Sysmiss | 329 |