| Value | Category | Cases | |
|---|---|---|---|
| -1 | 1 |
2.8%
|
|
| 1 | 7 |
19.4%
|
|
| 3 | 23 |
63.9%
|
|
| 4 | 2 |
5.6%
|
|
| 5 | 1 |
2.8%
|
|
| 7 | 1 |
2.8%
|
|
| 9 | 1 |
2.8%
|
|
| Sysmiss | 1013 |