| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2602 |
11%
|
| 2 | Monthly | 8630 |
36.3%
|
| 3 | Yearly | 5745 |
24.2%
|
| 4 | Not all | 6777 |
28.5%
|
| Sysmiss | 1058 |