| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 40 |
14.8%
|
| -7 | No internal shipments made (does not apply) | 8 |
3%
|
| 0 | No losses | 219 |
80.8%
|
| 1 | 2 |
0.7%
|
|
| 10 | 2 |
0.7%
|