| Value | Category | Cases | |
|---|---|---|---|
| 18 | 1 |
20%
|
|
| 20 | 1 |
20%
|
|
| 32 | 1 |
20%
|
|
| 35 | 1 |
20%
|
|
| 99 | Missing | 1 |
20%
|
| Sysmiss | 993 |