| Value | Category | Cases | |
|---|---|---|---|
| 0 | 7 |
9.9%
|
|
| 1 | 41 |
57.7%
|
|
| 2 | 16 |
22.5%
|
|
| 3 | 4 |
5.6%
|
|
| 4 | 2 |
2.8%
|
|
| 12 | 1 |
1.4%
|
|
| Sysmiss | 490 |