| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Per day | 353 |
1.8%
|
| 2 | 2. Per week | 3659 |
18.4%
|
| 3 | 3. Per month | 13715 |
68.8%
|
| 4 | 4. Per year | 2203 |
11.1%
|
| Sysmiss | 6002618 |