| Value | Category | Cases | |
|---|---|---|---|
| 30 | 6 |
5.9%
|
|
| 40 | 3 |
2.9%
|
|
| 50 | 40 |
39.2%
|
|
| 60 | 32 |
31.4%
|
|
| 70 | 21 |
20.6%
|
|
| Sysmiss | 714 |