| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not usually do it | 23 |
1.2%
|
| 2 | Increased | 130 |
6.7%
|
| 3 | Unchanged | 1682 |
87.3%
|
| 4 | Decreased | 67 |
3.5%
|
| 5 | Initially changed but has now returned to normal | 22 |
1.1%
|
| 98 | I do not know | 1 |
0.1%
|
| 99 | Refused | 1 |
0.1%
|
| Sysmiss | 106 |