| Value | Category | Cases | |
|---|---|---|---|
| -99 | 9 |
4.2%
|
|
| 0 | 19 |
8.8%
|
|
| 1 | 64 |
29.6%
|
|
| 2 | 72 |
33.3%
|
|
| 3 | 40 |
18.5%
|
|
| 4 | 10 |
4.6%
|
|
| 5 | 2 |
0.9%
|
|
| Sysmiss | 516 |