| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1306 |
5.3%
|
| 2 | Monthly | 4085 |
16.6%
|
| 3 | Yearly | 2784 |
11.3%
|
| 4 | Less often | 4401 |
17.9%
|
| 5 | Not at all | 12074 |
49%
|
| Sysmiss | 510 |