| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 61 |
0.3%
|
| 2 | Weekly | 128 |
0.6%
|
| 3 | Monthly | 110 |
0.5%
|
| 4 | Yearly | 56 |
0.3%
|
| 5 | Not at all | 21322 |
98.4%
|
| Sysmiss | 3431 |