| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 24 |
1%
|
| 1 | Weekly | 53 |
2.3%
|
| 2 | Monthly | 258 |
11.1%
|
| 3 | Quarterly | 1810 |
77.6%
|
| 4 | Annually | 78 |
3.3%
|
| 97 | Other | 109 |
4.7%
|
| Sysmiss | 2890 |