| Value | Category | Cases | |
|---|---|---|---|
| 18 | 1 |
1.4%
|
|
| 19 | 3 |
4.1%
|
|
| 20 | 9 |
12.2%
|
|
| 21 | 11 |
14.9%
|
|
| 22 | 23 |
31.1%
|
|
| 23 | 23 |
31.1%
|
|
| 24 | 4 |
5.4%
|
|
| Sysmiss | 41938 |