| Value | Category | Cases | |
|---|---|---|---|
| 1 | per hour | 3 |
0.1%
|
| 2 | per day | 25 |
0.9%
|
| 3 | per week | 186 |
6.8%
|
| 4 | per month | 2506 |
91.2%
|
| 5 | per year | 27 |
1%
|
| 6 | not stated | 0 |
0%
|
| Sysmiss | 8033 |