| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
1.9%
|
| -7 | No internal shipments made (does not apply) | 15 |
4.2%
|
| 0 | No losses | 328 |
90.9%
|
| 1 | 4 |
1.1%
|
|
| 2 | 2 |
0.6%
|
|
| 5 | 2 |
0.6%
|
|
| 6 | 1 |
0.3%
|
|
| 10 | 2 |
0.6%
|