| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
20%
|
| 1 | 1 |
10%
|
|
| 200 | 1 |
10%
|
|
| 670 | 1 |
10%
|
|
| 1000 | 1 |
10%
|
|
| 1100 | 1 |
10%
|
|
| 2000 | 1 |
10%
|
|
| 2500 | 1 |
10%
|
|
| 3000 | 1 |
10%
|
|
| Sysmiss | 590 |