| Value | Category | Cases | |
|---|---|---|---|
| 18 | 1 |
3.4%
|
|
| 19 | 5 |
17.2%
|
|
| 20 | 6 |
20.7%
|
|
| 21 | 5 |
17.2%
|
|
| 22 | 9 |
31%
|
|
| 23 | 3 |
10.3%
|
|
| Sysmiss | 70607 |