| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2589 |
10.5%
|
| 2 | Monthly | 2837 |
11.5%
|
| 3 | Yearly | 2798 |
11.4%
|
| 4 | Not all | 16402 |
66.6%
|
| Sysmiss | 534 |