| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
2.4%
|
|
| 10 | 32 |
78%
|
|
| 15 | 3 |
7.3%
|
|
| 20 | 5 |
12.2%
|
|
| Sysmiss | 230 |