| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3632 |
14.7%
|
| 2 | Monthly | 2670 |
10.8%
|
| 3 | Yearly | 1761 |
7.2%
|
| 4 | Not all | 16563 |
67.3%
|
| Sysmiss | 534 |