| Value | Category | Cases | |
|---|---|---|---|
| 1 | per hour | 20 |
0.7%
|
| 2 | per day | 57 |
2.1%
|
| 3 | per week | 570 |
20.6%
|
| 4 | per month | 1862 |
67.2%
|
| 5 | per year | 86 |
3.1%
|
| 6 | not indicated | 175 |
6.3%
|
| Sysmiss | 8010 |