| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 1 |
0.1%
|
| 1 | Weekly | 2 |
0.1%
|
| 2 | Bi-Weekly | 0 |
0%
|
| 3 | Monthly | 69 |
3.5%
|
| 4 | Annually | 1922 |
96.4%
|
| Sysmiss | 1329 |