| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 10 |
6.9%
|
| -1 | refuse | 5 |
3.4%
|
| 0 | 73 |
50.3%
|
|
| 1 | 0.5-100 | 39 |
26.9%
|
| 2 | 101-1000 | 11 |
7.6%
|
| 3 | 1001-80000 | 7 |
4.8%
|
| Sysmiss | 904 |