| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 16 |
4.5%
|
| -7 | No internal shipments made (does not apply) | 34 |
9.5%
|
| 0 | No losses | 282 |
78.6%
|
| 1 | 15 |
4.2%
|
|
| 2 | 8 |
2.2%
|
|
| 3 | 2 |
0.6%
|
|
| 5 | 1 |
0.3%
|
|
| 20 | 1 |
0.3%
|