| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
16%
|
| -7 | Does not apply (spontaneous) | 5 |
20%
|
| 50 | 1 |
4%
|
|
| 80 | 1 |
4%
|
|
| 100 | 1 |
4%
|
|
| 140 | 1 |
4%
|
|
| 200 | 3 |
12%
|
|
| 250 | 1 |
4%
|
|
| 280 | 1 |
4%
|
|
| 300 | 2 |
8%
|
|
| 500 | 1 |
4%
|
|
| 600 | 1 |
4%
|
|
| 1000 | 2 |
8%
|
|
| 4000 | 1 |
4%
|
|
| Sysmiss | 72 |