| Value | Category | Cases | |
|---|---|---|---|
| 6 | 1602 |
12.3%
|
|
| 7 | 3583 |
27.5%
|
|
| 8 | 4243 |
32.6%
|
|
| 9 | 3605 |
27.7%
|
|
| Sysmiss | 3791 |