| Value | Category | Cases | |
|---|---|---|---|
| 0 | 19 |
35.2%
|
|
| 15 | 2 |
3.7%
|
|
| 30 | 28 |
51.9%
|
|
| 45 | 1 |
1.9%
|
|
| 50 | 2 |
3.7%
|
|
| 55 | 2 |
3.7%
|
|
| Sysmiss | 419 |