| Value | Category | Cases | |
|---|---|---|---|
| 0 | 26 |
83.9%
|
|
| 2 | 1 |
3.2%
|
|
| 6 | 2 |
6.5%
|
|
| 10 | 1 |
3.2%
|
|
| 15 | 1 |
3.2%
|
|
| Sysmiss | 1965 |