| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1160 |
6.7%
|
|
| 2 | 90 |
0.5%
|
|
| 4 | 260 |
1.5%
|
|
| 6 | 15920 |
91.3%
|
|
| Sysmiss | 17938 |