| Value | Category | Cases | |
|---|---|---|---|
| 17 | 3 |
15%
|
|
| 18 | 8 |
40%
|
|
| 20 | 1 |
5%
|
|
| 21 | 4 |
20%
|
|
| 23 | 4 |
20%
|
|
| Sysmiss | 7568 |