| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 132 |
0.5%
|
| 2 | Monthly | 348 |
1.4%
|
| 3 | Yearly | 1280 |
5.2%
|
| 4 | Less often | 1958 |
8%
|
| 5 | Not at all | 20874 |
84.9%
|
| Sysmiss | 516 |