| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
41.9%
|
|
| 1 | 1 |
3.2%
|
|
| 2 | 7 |
22.6%
|
|
| 10 | 6 |
19.4%
|
|
| 15 | 4 |
12.9%
|
|
| Sysmiss | 195 |