| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 1705 |
7.9%
|
| 2 | Weekly | 1261 |
5.8%
|
| 3 | Monthly | 591 |
2.7%
|
| 4 | Yearly | 90 |
0.4%
|
| 5 | Not at all | 18030 |
83.2%
|
| Sysmiss | 3431 |