| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 3110 |
12.6%
|
| 2 | Monthly | 1939 |
7.9%
|
| 3 | Yearly | 1191 |
4.8%
|
| 4 | Less often | 2808 |
11.4%
|
| 5 | Not at all | 15544 |
63.2%
|
| Sysmiss | 516 |