| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 202 |
1%
|
| 2 | Weekly | 235 |
1.1%
|
| 3 | Monthly | 183 |
0.9%
|
| 4 | Yearly | 70 |
0.3%
|
| 5 | Not at all | 20496 |
96.7%
|
| Sysmiss | 3974 |