| Value | Category | Cases | |
|---|---|---|---|
| 0 | 468 |
69.4%
|
|
| 1 | 184 |
27.3%
|
|
| 2 | 17 |
2.5%
|
|
| 3 | 2 |
0.3%
|
|
| 4 | 2 |
0.3%
|
|
| 8 | 1 |
0.1%
|
|
| Sysmiss | 19582 |