| Value | Category | Cases | |
|---|---|---|---|
| 1 | HAS CERTIFICATE | 986 |
21%
|
| 2 | registered | 1167 |
24.8%
|
| 3 | neither | 2472 |
52.6%
|
| 4 | DON'T KN0W | 79 |
1.7%
|
| Sysmiss | 38 |