| Value | Category | Cases | |
|---|---|---|---|
| 1 | Own preparation | 0 |
0%
|
| 2 | Bought | 1844 |
89.7%
|
| 3 | Received for free | 209 |
10.2%
|
| 4 | Other source | 3 |
0.1%
|
| Sysmiss | 20049 |