| Value | Category | Cases | |
|---|---|---|---|
| 0 | 43 |
22.3%
|
|
| 30 | 60 |
31.1%
|
|
| 40 | 58 |
30.1%
|
|
| 50 | 31 |
16.1%
|
|
| 60 | 1 |
0.5%
|
|
| Sysmiss | 7 |