| Value | Category | Cases | |
|---|---|---|---|
| 6 | 168 |
92.3%
|
|
| 7 | 8 |
4.4%
|
|
| 8 | 5 |
2.7%
|
|
| 9 | 1 |
0.5%
|
|
| Sysmiss | 2018 |