| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 53 |
0.2%
|
| 2 | Monthly | 99 |
0.4%
|
| 3 | Yearly | 263 |
1.1%
|
| 4 | Less often | 737 |
3%
|
| 5 | Not at all | 23615 |
95.3%
|
| Sysmiss | 817 |