| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 457 |
1.9%
|
| 2 | Monthly | 2052 |
8.3%
|
| 3 | Yearly | 2711 |
11%
|
| 4 | Less often | 3538 |
14.4%
|
| 5 | Not at all | 15834 |
64.4%
|
| Sysmiss | 516 |