| Value | Category | Cases | |
|---|---|---|---|
| 1 | Collect ourselves | 4143 |
26.6%
|
| 2 | Purchase | 10689 |
68.7%
|
| 3 | Collect and Purchase | 311 |
2%
|
| 4 | Other | 425 |
2.7%
|
| Sysmiss | 85338 |