| Value | Category | Cases | |
|---|---|---|---|
| 20 | 1 |
1.8%
|
|
| 40 | 1 |
1.8%
|
|
| 50 | 7 |
12.7%
|
|
| 60 | 28 |
50.9%
|
|
| 70 | 17 |
30.9%
|
|
| 80 | 1 |
1.8%
|
|
| Sysmiss | 565 |