| Value | Category | Cases | |
|---|---|---|---|
| 8 | 1 |
10%
|
|
| 12 | 2 |
20%
|
|
| 15 | 2 |
20%
|
|
| 18 | 4 |
40%
|
|
| 19 | 1 |
10%
|
|
| Sysmiss | 1963 |