| Value | Category | Cases | |
|---|---|---|---|
| 0 | 152 |
57.6%
|
|
| 1 | 21 |
8%
|
|
| 2 | 77 |
29.2%
|
|
| 3 | 7 |
2.7%
|
|
| 4 | 2 |
0.8%
|
|
| 6 | 4 |
1.5%
|
|
| 20 | 1 |
0.4%
|
|
| Sysmiss | 22 |