| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1632 |
6.6%
|
| 2 | Monthly | 1138 |
4.6%
|
| 3 | Yearly | 928 |
3.8%
|
| 4 | Less often | 2156 |
8.8%
|
| 5 | Not at all | 18738 |
76.2%
|
| Sysmiss | 516 |