| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 132 |
2.1%
|
| 1 | 1 | 741 |
11.8%
|
| 2 | 2 | 2925 |
46.7%
|
| 3 | 3 or more | 2471 |
39.4%
|
| Sysmiss | 1231 |