| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 5863 |
36.8%
|
| 2 | Weekly | 3090 |
19.4%
|
| 3 | Monthly | 888 |
5.6%
|
| 4 | Yearly | 137 |
0.9%
|
| 5 | Not at all | 5957 |
37.4%
|
| Sysmiss | 8877 |