| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1339 |
5.4%
|
| 2 | Monthly | 2119 |
8.6%
|
| 3 | Yearly | 1895 |
7.7%
|
| 4 | Not all | 19273 |
78.3%
|
| Sysmiss | 534 |