| Value | Category | Cases | |
|---|---|---|---|
| 0 | 647 |
14.4%
|
|
| 1 | 2370 |
52.8%
|
|
| 2 | 1226 |
27.3%
|
|
| 3 | 168 |
3.7%
|
|
| 7 | 49 |
1.1%
|
|
| 8 | 7 |
0.2%
|
|
| 999 | 22 |
0.5%
|
|
| Sysmiss | 92 |