| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
36.4%
|
| 360 | 1 |
4.5%
|
|
| 400 | 1 |
4.5%
|
|
| 2400 | 1 |
4.5%
|
|
| 2480 | 1 |
4.5%
|
|
| 2800 | 1 |
4.5%
|
|
| 3640 | 1 |
4.5%
|
|
| 4000 | 1 |
4.5%
|
|
| 4500 | 2 |
9.1%
|
|
| 9000 | 1 |
4.5%
|
|
| 17000 | 1 |
4.5%
|
|
| 20000 | 3 |
13.6%
|
|
| Sysmiss | 131 |