| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 1 |
3.4%
|
| 0 | 15 |
51.7%
|
|
| 10 | 1 |
3.4%
|
|
| 11 | 1 |
3.4%
|
|
| 20 | 1 |
3.4%
|
|
| 25 | 1 |
3.4%
|
|
| 30 | 1 |
3.4%
|
|
| 40 | 1 |
3.4%
|
|
| 75 | 1 |
3.4%
|
|
| 80 | 1 |
3.4%
|
|
| 100 | 5 |
17.2%
|
|
| Sysmiss | 1403 |