| Value | Category | Cases | |
|---|---|---|---|
| 0 | 135 |
2.4%
|
|
| 5 | 568 |
10.2%
|
|
| 10 | 629 |
11.3%
|
|
| 15 | 1385 |
25%
|
|
| 20 | 1592 |
28.7%
|
|
| 25 | 1241 |
22.4%
|
|
| Sysmiss | 10890 |