| Value | Category | Cases | |
|---|---|---|---|
| 0 | 21 |
1.6%
|
|
| 2 | 5 |
0.4%
|
|
| 3 | 19 |
1.5%
|
|
| 4 | 54 |
4.2%
|
|
| 5 | 88 |
6.8%
|
|
| 6 | 154 |
11.9%
|
|
| 7 | 250 |
19.4%
|
|
| 8 | 402 |
31.1%
|
|
| 9 | 298 |
23.1%
|
|
| Sysmiss | 32 |