| Value | Category | Cases | |
|---|---|---|---|
| 0 | 421 |
11.1%
|
|
| 1 | 798 |
21.1%
|
|
| 2 | 1413 |
37.4%
|
|
| 3 | 758 |
20.1%
|
|
| 4 | 337 |
8.9%
|
|
| 9 | 52 |
1.4%
|
|
| Sysmiss | 2780 |