| Value | Category | Cases | |
|---|---|---|---|
| 0 | 71 |
67%
|
|
| 1 | 27 |
25.5%
|
|
| 2 | 5 |
4.7%
|
|
| 6 | 1 |
0.9%
|
|
| 15 | 1 |
0.9%
|
|
| 20 | 1 |
0.9%
|
|
| Sysmiss | 91 |