| Value | Category | Cases | |
|---|---|---|---|
| 0 | 31 |
3.8%
|
|
| 1 | 18 |
2.2%
|
|
| 2 | 34 |
4.2%
|
|
| 3 | 214 |
26.6%
|
|
| 4 | 509 |
63.2%
|
|
| Sysmiss | 889 |