| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 37 |
5.5%
|
| 1 | 1 | 143 |
21.3%
|
| 2 | 2 | 288 |
42.9%
|
| 3 | 3 | 203 |
30.3%
|
| Sysmiss | 2970 |