| Value | Category | Cases | |
|---|---|---|---|
| 0 | 538 |
19.4%
|
|
| 1 | 236 |
8.5%
|
|
| 2 | 1640 |
59.3%
|
|
| 3 | 218 |
7.9%
|
|
| 4 | 135 |
4.9%
|
|
| Sysmiss | 107 |