| Value | Category | Cases | |
|---|---|---|---|
| 0 | 373 |
23.4%
|
|
| 1 | 535 |
33.5%
|
|
| 2 | 373 |
23.4%
|
|
| 3 | 128 |
8%
|
|
| 7 | 137 |
8.6%
|
|
| 8 | 33 |
2.1%
|
|
| 999 | 17 |
1.1%
|
|
| Sysmiss | 99 |