| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 207 |
0.8%
|
| 2 | Monthly | 452 |
1.8%
|
| 3 | Yearly | 1064 |
4.3%
|
| 4 | Less often | 2082 |
8.4%
|
| 5 | Not at all | 20962 |
84.6%
|
| Sysmiss | 817 |