| Value | Category | Cases | |
|---|---|---|---|
| 1 | Always available | 11 |
52.4%
|
| 2 | Mostly available | 6 |
28.6%
|
| 3 | Sometimes available | 3 |
14.3%
|
| 4 | Rarely available | 1 |
4.8%
|
| Sysmiss | 2375 |