| Value | Category | Cases | |
|---|---|---|---|
| 1 | Per day | 52 |
4.5%
|
| 2 | Per week | 21 |
1.8%
|
| 3 | Per month | 998 |
86.3%
|
| 4 | Per year | 85 |
7.4%
|
| Sysmiss | 257 |