| Value | Category | Cases | |
|---|---|---|---|
| 1 | Collect ourselves | 4182 |
27.6%
|
| 2 | Purchase | 10571 |
69.8%
|
| 3 | Collect and Purchase | 119 |
0.8%
|
| 4 | Other | 263 |
1.7%
|
| Sysmiss | 85638 |