| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 0 |
0%
|
| 0 | 4 |
21.1%
|
|
| 8 | 1 |
5.3%
|
|
| 20 | 1 |
5.3%
|
|
| 40 | 1 |
5.3%
|
|
| 80 | 3 |
15.8%
|
|
| 100 | 9 |
47.4%
|
|
| Sysmiss | 222 |