| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 193 |
0.8%
|
| 2 | Monthly | 754 |
3%
|
| 3 | Yearly | 1060 |
4.3%
|
| 4 | Less often | 2245 |
9.1%
|
| 5 | Not at all | 20515 |
82.8%
|
| Sysmiss | 817 |