| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 449 |
69.6%
|
| 2 | Partial | 158 |
24.5%
|
| 3 | Full (received for free) | 31 |
4.8%
|
| 4 | I don't know | 7 |
1.1%
|
| Sysmiss | 24690 |