| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 55 |
2.6%
|
| 2 | 1 | 168 |
8%
|
| 3 | 2 | 307 |
14.6%
|
| 4 | 3 or more | 1566 |
74.7%
|
| Sysmiss | 18 |