| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 1434 |
5.8%
|
| 2 | Monthly | 1139 |
4.6%
|
| 3 | Yearly | 793 |
3.2%
|
| 4 | Less often | 2005 |
8.1%
|
| 5 | Not at all | 19279 |
78.2%
|
| Sysmiss | 510 |