| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 125 |
0.5%
|
| 2 | Monthly | 395 |
1.6%
|
| 3 | Yearly | 1333 |
5.4%
|
| 4 | Less often | 1978 |
8%
|
| 5 | Not at all | 20819 |
84.5%
|
| Sysmiss | 510 |