| Value | Category | Cases | |
|---|---|---|---|
| 1 | Collect ourselves | 6092 |
27.5%
|
| 2 | Purchase | 15206 |
68.5%
|
| 3 | Collect and Purchase | 330 |
1.5%
|
| 4 | Other | 564 |
2.5%
|
| Sysmiss | 123374 |