| Value | Category | Cases | |
|---|---|---|---|
| 18 | 2 |
3.4%
|
|
| 19 | 6 |
10.3%
|
|
| 20 | 12 |
20.7%
|
|
| 21 | 5 |
8.6%
|
|
| 22 | 14 |
24.1%
|
|
| 23 | 19 |
32.8%
|
|
| Sysmiss | 70578 |