| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 876 |
64.5%
|
| 2 | Partial | 335 |
24.7%
|
| 3 | Full (received for free) | 111 |
8.2%
|
| 4 | I don't know | 36 |
2.7%
|
| Sysmiss | 23977 |