| Value | Category | Cases | |
|---|---|---|---|
| 1 | Collect ourselves | 5374 |
33%
|
| 2 | Purchase | 10188 |
62.6%
|
| 3 | Collect and Purchase | 242 |
1.5%
|
| 4 | Other | 475 |
2.9%
|
| Sysmiss | 50987 |