| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 3 |
2.9%
|
| -7 | no internal shipment made | 1 |
1%
|
| 0 | no losses | 94 |
92.2%
|
| 1 | 1 |
1%
|
|
| 2 | 3 |
2.9%
|
|
| Sysmiss | 853 |