| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
0.7%
|
| -7 | No internal shipments made (does not apply) | 110 |
18.3%
|
| 0 | No losses | 479 |
79.7%
|
| 2 | 3 |
0.5%
|
|
| 3 | 2 |
0.3%
|
|
| 5 | 2 |
0.3%
|
|
| 90 | 1 |
0.2%
|