| Value | Category | Cases | |
|---|---|---|---|
| 1 | Collect ourselves | 3533 |
22.3%
|
| 2 | Purchase | 11557 |
72.9%
|
| 3 | Collect and Purchase | 348 |
2.2%
|
| 4 | Other | 415 |
2.6%
|
| Sysmiss | 85163 |