| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 418 |
7.3%
|
| 2 | 1 | 559 |
9.7%
|
| 3 | 2 | 915 |
16%
|
| 4 | 3 or more | 3844 |
67%
|
| Sysmiss | 113 |