| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 1151 |
36.5%
|
| 15 | 15 | 849 |
26.9%
|
| 30 | 30 | 1019 |
32.3%
|
| 45 | 45 | 133 |
4.2%
|
| Sysmiss | 38860 |