| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 15549 |
49.1%
|
| 15 | 15 | 4616 |
14.6%
|
| 30 | 30 | 6650 |
21%
|
| 45 | 45 | 4830 |
15.3%
|
| Sysmiss | 10367 |