| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 978 |
6.4%
|
| 2 | 1 | 1954 |
12.7%
|
| 3 | 2 | 2416 |
15.7%
|
| 4 | 3 or more | 10003 |
65.2%
|
| Sysmiss | 439 |