| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 7892 |
49.3%
|
| 2 | Monthly | 3846 |
24%
|
| 3 | Yearly | 3127 |
19.5%
|
| 4 | Every 2-3 years | 535 |
3.3%
|
| 5 | Every 3 years or more | 617 |
3.9%
|
| Sysmiss | 8833 |