| Value | Category | Cases | |
|---|---|---|---|
| 0 | 227 |
3.8%
|
|
| 20 | 804 |
13.4%
|
|
| 40 | 1824 |
30.5%
|
|
| 60 | 2063 |
34.4%
|
|
| 80 | 957 |
16%
|
|
| 100 | 115 |
1.9%
|
|
| Sysmiss | 1171 |