| Value | Category | Cases | |
|---|---|---|---|
| 1 | Own preparation | 0 |
0%
|
| 2 | Bought | 1355 |
91.6%
|
| 3 | Received for free | 124 |
8.4%
|
| 4 | Other source | 1 |
0.1%
|
| Sysmiss | 18485 |