| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 |
7.3%
|
| -7 | No internal shipments made (Does not apply) | 16 |
10.6%
|
| 0 | 86 |
57%
|
|
| 2 | 3 |
2%
|
|
| 3 | 1 |
0.7%
|
|
| 4 | 1 |
0.7%
|
|
| 5 | 4 |
2.6%
|
|
| 6 | 1 |
0.7%
|
|
| 8 | 2 |
1.3%
|
|
| 10 | 5 |
3.3%
|
|
| 12 | 1 |
0.7%
|
|
| 15 | 6 |
4%
|
|
| 20 | 3 |
2%
|
|
| 25 | 1 |
0.7%
|
|
| 30 | 4 |
2.6%
|
|
| 35 | 1 |
0.7%
|
|
| 40 | 2 |
1.3%
|
|
| 50 | 1 |
0.7%
|
|
| 80 | 2 |
1.3%
|